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c++ source #1
Output
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Intel asm syntax
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Filters
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Debug intrinsics
Compiler
6502-c++ 11.1.0
ARM GCC 10.2.0
ARM GCC 10.3.0
ARM GCC 10.4.0
ARM GCC 10.5.0
ARM GCC 11.1.0
ARM GCC 11.2.0
ARM GCC 11.3.0
ARM GCC 11.4.0
ARM GCC 12.1.0
ARM GCC 12.2.0
ARM GCC 12.3.0
ARM GCC 13.1.0
ARM GCC 13.2.0
ARM GCC 13.2.0 (unknown-eabi)
ARM GCC 4.5.4
ARM GCC 4.6.4
ARM GCC 5.4
ARM GCC 6.3.0
ARM GCC 6.4.0
ARM GCC 7.3.0
ARM GCC 7.5.0
ARM GCC 8.2.0
ARM GCC 8.5.0
ARM GCC 9.3.0
ARM GCC 9.4.0
ARM GCC 9.5.0
ARM GCC trunk
ARM gcc 10.2.1 (none)
ARM gcc 10.3.1 (2021.07 none)
ARM gcc 10.3.1 (2021.10 none)
ARM gcc 11.2.1 (none)
ARM gcc 5.4.1 (none)
ARM gcc 7.2.1 (none)
ARM gcc 8.2 (WinCE)
ARM gcc 8.3.1 (none)
ARM gcc 9.2.1 (none)
ARM msvc v19.0 (WINE)
ARM msvc v19.10 (WINE)
ARM msvc v19.14 (WINE)
ARM64 Morello gcc 10.1 Alpha 2
ARM64 gcc 10.2
ARM64 gcc 10.3
ARM64 gcc 10.4
ARM64 gcc 10.5.0
ARM64 gcc 11.1
ARM64 gcc 11.2
ARM64 gcc 11.3
ARM64 gcc 11.4.0
ARM64 gcc 12.1
ARM64 gcc 12.2.0
ARM64 gcc 12.3.0
ARM64 gcc 13.1.0
ARM64 gcc 13.2.0
ARM64 gcc 5.4
ARM64 gcc 6.3
ARM64 gcc 6.4
ARM64 gcc 7.3
ARM64 gcc 7.5
ARM64 gcc 8.2
ARM64 gcc 8.5
ARM64 gcc 9.3
ARM64 gcc 9.4
ARM64 gcc 9.5
ARM64 gcc trunk
ARM64 msvc v19.14 (WINE)
AVR gcc 10.3.0
AVR gcc 11.1.0
AVR gcc 12.1.0
AVR gcc 12.2.0
AVR gcc 12.3.0
AVR gcc 13.1.0
AVR gcc 13.2.0
AVR gcc 4.5.4
AVR gcc 4.6.4
AVR gcc 5.4.0
AVR gcc 9.2.0
AVR gcc 9.3.0
Arduino Mega (1.8.9)
Arduino Uno (1.8.9)
BPF clang (trunk)
BPF clang 13.0.0
BPF clang 14.0.0
BPF clang 15.0.0
BPF clang 16.0.0
BPF clang 17.0.1
BPF clang 18.1.0
BPF gcc 13.1.0
BPF gcc 13.2.0
BPF gcc trunk
EDG (experimental reflection)
EDG 6.5
EDG 6.5 (GNU mode gcc 13)
EDG 6.6
EDG 6.6 (GNU mode gcc 13)
FRC 2019
FRC 2020
FRC 2023
KVX ACB 4.1.0 (GCC 7.5.0)
KVX ACB 4.1.0-cd1 (GCC 7.5.0)
KVX ACB 4.10.0 (GCC 10.3.1)
KVX ACB 4.11.1 (GCC 10.3.1)
KVX ACB 4.12.0 (GCC 11.3.0)
KVX ACB 4.2.0 (GCC 7.5.0)
KVX ACB 4.3.0 (GCC 7.5.0)
KVX ACB 4.4.0 (GCC 7.5.0)
KVX ACB 4.6.0 (GCC 9.4.1)
KVX ACB 4.8.0 (GCC 9.4.1)
KVX ACB 4.9.0 (GCC 9.4.1)
M68K gcc 13.1.0
M68K gcc 13.2.0
M68k clang (trunk)
MRISC32 gcc (trunk)
MSP430 gcc 4.5.3
MSP430 gcc 5.3.0
MSP430 gcc 6.2.1
MinGW clang 14.0.3
MinGW clang 14.0.6
MinGW clang 15.0.7
MinGW clang 16.0.0
MinGW clang 16.0.2
MinGW gcc 11.3.0
MinGW gcc 12.1.0
MinGW gcc 12.2.0
MinGW gcc 13.1.0
RISC-V (32-bits) gcc (trunk)
RISC-V (32-bits) gcc 10.2.0
RISC-V (32-bits) gcc 10.3.0
RISC-V (32-bits) gcc 11.2.0
RISC-V (32-bits) gcc 11.3.0
RISC-V (32-bits) gcc 11.4.0
RISC-V (32-bits) gcc 12.1.0
RISC-V (32-bits) gcc 12.2.0
RISC-V (32-bits) gcc 12.3.0
RISC-V (32-bits) gcc 13.1.0
RISC-V (32-bits) gcc 13.2.0
RISC-V (32-bits) gcc 8.2.0
RISC-V (32-bits) gcc 8.5.0
RISC-V (32-bits) gcc 9.4.0
RISC-V (64-bits) gcc (trunk)
RISC-V (64-bits) gcc 10.2.0
RISC-V (64-bits) gcc 10.3.0
RISC-V (64-bits) gcc 11.2.0
RISC-V (64-bits) gcc 11.3.0
RISC-V (64-bits) gcc 11.4.0
RISC-V (64-bits) gcc 12.1.0
RISC-V (64-bits) gcc 12.2.0
RISC-V (64-bits) gcc 12.3.0
RISC-V (64-bits) gcc 13.1.0
RISC-V (64-bits) gcc 13.2.0
RISC-V (64-bits) gcc 8.2.0
RISC-V (64-bits) gcc 8.5.0
RISC-V (64-bits) gcc 9.4.0
RISC-V rv32gc clang (trunk)
RISC-V rv32gc clang 10.0.0
RISC-V rv32gc clang 10.0.1
RISC-V rv32gc clang 11.0.0
RISC-V rv32gc clang 11.0.1
RISC-V rv32gc clang 12.0.0
RISC-V rv32gc clang 12.0.1
RISC-V rv32gc clang 13.0.0
RISC-V rv32gc clang 13.0.1
RISC-V rv32gc clang 14.0.0
RISC-V rv32gc clang 15.0.0
RISC-V rv32gc clang 16.0.0
RISC-V rv32gc clang 17.0.1
RISC-V rv32gc clang 18.1.0
RISC-V rv32gc clang 9.0.0
RISC-V rv32gc clang 9.0.1
RISC-V rv64gc clang (trunk)
RISC-V rv64gc clang 10.0.0
RISC-V rv64gc clang 10.0.1
RISC-V rv64gc clang 11.0.0
RISC-V rv64gc clang 11.0.1
RISC-V rv64gc clang 12.0.0
RISC-V rv64gc clang 12.0.1
RISC-V rv64gc clang 13.0.0
RISC-V rv64gc clang 13.0.1
RISC-V rv64gc clang 14.0.0
RISC-V rv64gc clang 15.0.0
RISC-V rv64gc clang 16.0.0
RISC-V rv64gc clang 17.0.1
RISC-V rv64gc clang 18.1.0
RISC-V rv64gc clang 9.0.0
RISC-V rv64gc clang 9.0.1
Raspbian Buster
Raspbian Stretch
SPARC LEON gcc 12.2.0
SPARC LEON gcc 12.3.0
SPARC LEON gcc 13.1.0
SPARC LEON gcc 13.2.0
SPARC gcc 12.2.0
SPARC gcc 12.3.0
SPARC gcc 13.1.0
SPARC gcc 13.2.0
SPARC64 gcc 12.2.0
SPARC64 gcc 12.3.0
SPARC64 gcc 13.1.0
SPARC64 gcc 13.2.0
TI C6x gcc 12.2.0
TI C6x gcc 12.3.0
TI C6x gcc 13.1.0
TI C6x gcc 13.2.0
TI CL430 21.6.1
VAX gcc NetBSDELF 10.4.0
VAX gcc NetBSDELF 10.5.0 (Nov 15 03:50:22 2023)
WebAssembly clang (trunk)
Xtensa ESP32 gcc 11.2.0 (2022r1)
Xtensa ESP32 gcc 12.2.0 (20230208)
Xtensa ESP32 gcc 8.2.0 (2019r2)
Xtensa ESP32 gcc 8.2.0 (2020r1)
Xtensa ESP32 gcc 8.2.0 (2020r2)
Xtensa ESP32 gcc 8.4.0 (2020r3)
Xtensa ESP32 gcc 8.4.0 (2021r1)
Xtensa ESP32 gcc 8.4.0 (2021r2)
Xtensa ESP32-S2 gcc 11.2.0 (2022r1)
Xtensa ESP32-S2 gcc 12.2.0 (20230208)
Xtensa ESP32-S2 gcc 8.2.0 (2019r2)
Xtensa ESP32-S2 gcc 8.2.0 (2020r1)
Xtensa ESP32-S2 gcc 8.2.0 (2020r2)
Xtensa ESP32-S2 gcc 8.4.0 (2020r3)
Xtensa ESP32-S2 gcc 8.4.0 (2021r1)
Xtensa ESP32-S2 gcc 8.4.0 (2021r2)
Xtensa ESP32-S3 gcc 11.2.0 (2022r1)
Xtensa ESP32-S3 gcc 12.2.0 (20230208)
Xtensa ESP32-S3 gcc 8.4.0 (2020r3)
Xtensa ESP32-S3 gcc 8.4.0 (2021r1)
Xtensa ESP32-S3 gcc 8.4.0 (2021r2)
arm64 msvc v19.28 VS16.9
arm64 msvc v19.29 VS16.10
arm64 msvc v19.29 VS16.11
arm64 msvc v19.30
arm64 msvc v19.31
arm64 msvc v19.32
arm64 msvc v19.33
arm64 msvc v19.34
arm64 msvc v19.35
arm64 msvc v19.36
arm64 msvc v19.37
arm64 msvc v19.38
arm64 msvc v19.latest
armv7-a clang (trunk)
armv7-a clang 10.0.0
armv7-a clang 10.0.1
armv7-a clang 11.0.0
armv7-a clang 11.0.1
armv7-a clang 9.0.0
armv7-a clang 9.0.1
armv8-a clang (all architectural features, trunk)
armv8-a clang (trunk)
armv8-a clang 10.0.0
armv8-a clang 10.0.1
armv8-a clang 11.0.0
armv8-a clang 11.0.1
armv8-a clang 12.0.0
armv8-a clang 13.0.0
armv8-a clang 14.0.0
armv8-a clang 15.0.0
armv8-a clang 16.0.0
armv8-a clang 17.0.1
armv8-a clang 18.1.0
armv8-a clang 9.0.0
armv8-a clang 9.0.1
ellcc 0.1.33
ellcc 0.1.34
ellcc 2017-07-16
hexagon-clang 16.0.5
llvm-mos atari2600-3e
llvm-mos atari2600-4k
llvm-mos atari2600-common
llvm-mos atari5200-supercart
llvm-mos atari8-cart-megacart
llvm-mos atari8-cart-std
llvm-mos atari8-cart-xegs
llvm-mos atari8-common
llvm-mos atari8-dos
llvm-mos c128
llvm-mos c64
llvm-mos commodore
llvm-mos cpm65
llvm-mos cx16
llvm-mos dodo
llvm-mos eater
llvm-mos mega65
llvm-mos nes
llvm-mos nes-action53
llvm-mos nes-cnrom
llvm-mos nes-gtrom
llvm-mos nes-mmc1
llvm-mos nes-mmc3
llvm-mos nes-nrom
llvm-mos nes-unrom
llvm-mos nes-unrom-512
llvm-mos osi-c1p
llvm-mos pce
llvm-mos pce-cd
llvm-mos pce-common
llvm-mos pet
llvm-mos rp6502
llvm-mos rpc8e
llvm-mos supervision
llvm-mos vic20
loongarch64 gcc 12.2.0
loongarch64 gcc 12.3.0
loongarch64 gcc 13.1.0
loongarch64 gcc 13.2.0
mips clang 13.0.0
mips clang 14.0.0
mips clang 15.0.0
mips clang 16.0.0
mips clang 17.0.1
mips clang 18.1.0
mips gcc 11.2.0
mips gcc 12.1.0
mips gcc 12.2.0
mips gcc 12.3.0
mips gcc 13.1.0
mips gcc 13.2.0
mips gcc 4.9.4
mips gcc 5.4
mips gcc 5.5.0
mips gcc 9.3.0 (codescape)
mips gcc 9.5.0
mips64 (el) gcc 12.1.0
mips64 (el) gcc 12.2.0
mips64 (el) gcc 12.3.0
mips64 (el) gcc 13.1.0
mips64 (el) gcc 13.2.0
mips64 (el) gcc 4.9.4
mips64 (el) gcc 5.4.0
mips64 (el) gcc 5.5.0
mips64 (el) gcc 9.5.0
mips64 clang 13.0.0
mips64 clang 14.0.0
mips64 clang 15.0.0
mips64 clang 16.0.0
mips64 clang 17.0.1
mips64 clang 18.1.0
mips64 gcc 11.2.0
mips64 gcc 12.1.0
mips64 gcc 12.2.0
mips64 gcc 12.3.0
mips64 gcc 13.1.0
mips64 gcc 13.2.0
mips64 gcc 4.9.4
mips64 gcc 5.4.0
mips64 gcc 5.5.0
mips64 gcc 9.5.0
mips64el clang 13.0.0
mips64el clang 14.0.0
mips64el clang 15.0.0
mips64el clang 16.0.0
mips64el clang 17.0.1
mips64el clang 18.1.0
mipsel clang 13.0.0
mipsel clang 14.0.0
mipsel clang 15.0.0
mipsel clang 16.0.0
mipsel clang 17.0.1
mipsel clang 18.1.0
mipsel gcc 12.1.0
mipsel gcc 12.2.0
mipsel gcc 12.3.0
mipsel gcc 13.1.0
mipsel gcc 13.2.0
mipsel gcc 4.9.4
mipsel gcc 5.4.0
mipsel gcc 5.5.0
mipsel gcc 9.5.0
nanoMIPS gcc 6.3.0 (mtk)
power gcc 11.2.0
power gcc 12.1.0
power gcc 12.2.0
power gcc 12.3.0
power gcc 13.1.0
power gcc 13.2.0
power gcc 4.8.5
power64 AT12.0 (gcc8)
power64 AT13.0 (gcc9)
power64 gcc 11.2.0
power64 gcc 12.1.0
power64 gcc 12.2.0
power64 gcc 12.3.0
power64 gcc 13.1.0
power64 gcc 13.2.0
power64 gcc trunk
power64le AT12.0 (gcc8)
power64le AT13.0 (gcc9)
power64le clang (trunk)
power64le gcc 11.2.0
power64le gcc 12.1.0
power64le gcc 12.2.0
power64le gcc 12.3.0
power64le gcc 13.1.0
power64le gcc 13.2.0
power64le gcc 6.3.0
power64le gcc trunk
powerpc64 clang (trunk)
s390x gcc 11.2.0
s390x gcc 12.1.0
s390x gcc 12.2.0
s390x gcc 12.3.0
s390x gcc 13.1.0
s390x gcc 13.2.0
sh gcc 12.2.0
sh gcc 12.3.0
sh gcc 13.1.0
sh gcc 13.2.0
sh gcc 4.9.4
sh gcc 9.5.0
vast (trunk)
x64 msvc v19.0 (WINE)
x64 msvc v19.10 (WINE)
x64 msvc v19.14
x64 msvc v19.14 (WINE)
x64 msvc v19.15
x64 msvc v19.16
x64 msvc v19.20
x64 msvc v19.21
x64 msvc v19.22
x64 msvc v19.23
x64 msvc v19.24
x64 msvc v19.25
x64 msvc v19.26
x64 msvc v19.27
x64 msvc v19.28
x64 msvc v19.28 VS16.9
x64 msvc v19.29 VS16.10
x64 msvc v19.29 VS16.11
x64 msvc v19.30
x64 msvc v19.31
x64 msvc v19.32
x64 msvc v19.33
x64 msvc v19.34
x64 msvc v19.35
x64 msvc v19.36
x64 msvc v19.37
x64 msvc v19.38
x64 msvc v19.latest
x86 djgpp 4.9.4
x86 djgpp 5.5.0
x86 djgpp 6.4.0
x86 djgpp 7.2.0
x86 msvc v19.0 (WINE)
x86 msvc v19.10 (WINE)
x86 msvc v19.14
x86 msvc v19.14 (WINE)
x86 msvc v19.15
x86 msvc v19.16
x86 msvc v19.20
x86 msvc v19.21
x86 msvc v19.22
x86 msvc v19.23
x86 msvc v19.24
x86 msvc v19.25
x86 msvc v19.26
x86 msvc v19.27
x86 msvc v19.28
x86 msvc v19.28 VS16.9
x86 msvc v19.29 VS16.10
x86 msvc v19.29 VS16.11
x86 msvc v19.30
x86 msvc v19.31
x86 msvc v19.32
x86 msvc v19.33
x86 msvc v19.34
x86 msvc v19.35
x86 msvc v19.36
x86 msvc v19.37
x86 msvc v19.38
x86 msvc v19.latest
x86 nvc++ 22.11
x86 nvc++ 22.7
x86 nvc++ 22.9
x86 nvc++ 23.1
x86 nvc++ 23.11
x86 nvc++ 23.3
x86 nvc++ 23.5
x86 nvc++ 23.7
x86 nvc++ 23.9
x86 nvc++ 24.1
x86 nvc++ 24.3
x86-64 Zapcc 190308
x86-64 clang (amd-stg-open)
x86-64 clang (assertions trunk)
x86-64 clang (clangir)
x86-64 clang (experimental -Wlifetime)
x86-64 clang (experimental P1061)
x86-64 clang (experimental P1144)
x86-64 clang (experimental P1221)
x86-64 clang (experimental P2996)
x86-64 clang (experimental metaprogramming - P2632)
x86-64 clang (experimental pattern matching)
x86-64 clang (old concepts branch)
x86-64 clang (reflection)
x86-64 clang (resugar)
x86-64 clang (thephd.dev)
x86-64 clang (trunk)
x86-64 clang (variadic friends - P2893)
x86-64 clang (widberg)
x86-64 clang 10.0.0
x86-64 clang 10.0.0 (assertions)
x86-64 clang 10.0.1
x86-64 clang 11.0.0
x86-64 clang 11.0.0 (assertions)
x86-64 clang 11.0.1
x86-64 clang 12.0.0
x86-64 clang 12.0.0 (assertions)
x86-64 clang 12.0.1
x86-64 clang 13.0.0
x86-64 clang 13.0.0 (assertions)
x86-64 clang 13.0.1
x86-64 clang 14.0.0
x86-64 clang 14.0.0 (assertions)
x86-64 clang 15.0.0
x86-64 clang 15.0.0 (assertions)
x86-64 clang 16.0.0
x86-64 clang 16.0.0 (assertions)
x86-64 clang 17.0.1
x86-64 clang 17.0.1 (assertions)
x86-64 clang 18.1.0
x86-64 clang 18.1.0 (assertions)
x86-64 clang 2.6.0 (assertions)
x86-64 clang 2.7.0 (assertions)
x86-64 clang 2.8.0 (assertions)
x86-64 clang 2.9.0 (assertions)
x86-64 clang 3.0.0
x86-64 clang 3.0.0 (assertions)
x86-64 clang 3.1
x86-64 clang 3.1 (assertions)
x86-64 clang 3.2
x86-64 clang 3.2 (assertions)
x86-64 clang 3.3
x86-64 clang 3.3 (assertions)
x86-64 clang 3.4 (assertions)
x86-64 clang 3.4.1
x86-64 clang 3.5
x86-64 clang 3.5 (assertions)
x86-64 clang 3.5.1
x86-64 clang 3.5.2
x86-64 clang 3.6
x86-64 clang 3.6 (assertions)
x86-64 clang 3.7
x86-64 clang 3.7 (assertions)
x86-64 clang 3.7.1
x86-64 clang 3.8
x86-64 clang 3.8 (assertions)
x86-64 clang 3.8.1
x86-64 clang 3.9.0
x86-64 clang 3.9.0 (assertions)
x86-64 clang 3.9.1
x86-64 clang 4.0.0
x86-64 clang 4.0.0 (assertions)
x86-64 clang 4.0.1
x86-64 clang 5.0.0
x86-64 clang 5.0.0 (assertions)
x86-64 clang 5.0.1
x86-64 clang 5.0.2
x86-64 clang 6.0.0
x86-64 clang 6.0.0 (assertions)
x86-64 clang 6.0.1
x86-64 clang 7.0.0
x86-64 clang 7.0.0 (assertions)
x86-64 clang 7.0.1
x86-64 clang 7.1.0
x86-64 clang 8.0.0
x86-64 clang 8.0.0 (assertions)
x86-64 clang 8.0.1
x86-64 clang 9.0.0
x86-64 clang 9.0.0 (assertions)
x86-64 clang 9.0.1
x86-64 clang rocm-4.5.2
x86-64 clang rocm-5.0.2
x86-64 clang rocm-5.1.3
x86-64 clang rocm-5.2.3
x86-64 clang rocm-5.3.3
x86-64 clang rocm-5.7.0
x86-64 gcc (contract labels)
x86-64 gcc (contracts natural syntax)
x86-64 gcc (contracts)
x86-64 gcc (coroutines)
x86-64 gcc (modules)
x86-64 gcc (trunk)
x86-64 gcc 10.1
x86-64 gcc 10.2
x86-64 gcc 10.3
x86-64 gcc 10.4
x86-64 gcc 10.5
x86-64 gcc 11.1
x86-64 gcc 11.2
x86-64 gcc 11.3
x86-64 gcc 11.4
x86-64 gcc 12.1
x86-64 gcc 12.2
x86-64 gcc 12.3
x86-64 gcc 13.1
x86-64 gcc 13.2
x86-64 gcc 4.1.2
x86-64 gcc 4.4.7
x86-64 gcc 4.5.3
x86-64 gcc 4.6.4
x86-64 gcc 4.7.1
x86-64 gcc 4.7.2
x86-64 gcc 4.7.3
x86-64 gcc 4.7.4
x86-64 gcc 4.8.1
x86-64 gcc 4.8.2
x86-64 gcc 4.8.3
x86-64 gcc 4.8.4
x86-64 gcc 4.8.5
x86-64 gcc 4.9.0
x86-64 gcc 4.9.1
x86-64 gcc 4.9.2
x86-64 gcc 4.9.3
x86-64 gcc 4.9.4
x86-64 gcc 5.1
x86-64 gcc 5.2
x86-64 gcc 5.3
x86-64 gcc 5.4
x86-64 gcc 5.5
x86-64 gcc 6.1
x86-64 gcc 6.2
x86-64 gcc 6.3
x86-64 gcc 6.4
x86-64 gcc 7.1
x86-64 gcc 7.2
x86-64 gcc 7.3
x86-64 gcc 7.4
x86-64 gcc 7.5
x86-64 gcc 8.1
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zig c++ 0.10.0
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#include <iostream> #include <vector> #include <random> #include <cstdint> #include <array> #include <cassert> #include <chrono> #include <iterator> #include <type_traits> #include <thread> #include <mutex> template <typename T, std::size_t CapacityV> struct FixedVector { private: using StorageType = typename std::aligned_storage<sizeof(T), alignof(T)>::type; public: using value_type = T; using size_type = std::size_t; using difference_type = int; using reference = T &; using const_reference = const T &; using pointer = T *; using const_pointer = const T*; using iterator = T *; using const_iterator = const T*; using reverse_iterator = std::reverse_iterator<iterator>; using const_reverse_iterator = std::reverse_iterator<const_iterator>; constexpr FixedVector() : m_size(0) { } constexpr FixedVector(size_type s) : m_size(s) { assert(s <= CapacityV); for (size_type i = 0; i < s; ++i) { new (&(m_data[i])) T{}; } } constexpr FixedVector(size_type s, const T& v) : m_size(s) { assert(s <= CapacityV); for (size_type i = 0; i < s; ++i) { new (&(m_data[i])) T(v); } } constexpr FixedVector(const FixedVector& other) : m_size(other.m_size) { for (size_type i = 0; i < m_size; ++i) { new (&(m_data[i])) T(other[i]); } } constexpr FixedVector(FixedVector&& other) noexcept : m_size(other.m_size) { for (size_type i = 0; i < m_size; ++i) { new (&(m_data[i])) T(std::move(other[i])); } } ~FixedVector() { clear(); } constexpr FixedVector& operator=(const FixedVector& other) { size_type i = 0; for (; i < m_size && i < other.m_size; ++i) { (*this)[i] = other[i]; } for (; i < m_size; ++i) { (*this)[i].~T(); } for (; i < other.m_size; ++i) { new (&(m_data[i])) T(other[i]); } m_size = other.m_size; return *this; } constexpr FixedVector& operator=(FixedVector&& other) noexcept { size_type i = 0; for (; i < m_size && i < other.m_size; ++i) { (*this)[i] = std::move(other[i]); } for (; i < m_size; ++i) { (*this)[i].~T(); } for (; i < other.m_size; ++i) { new (&(m_data[i])) T(std::move(other[i])); } m_size = other.m_size; return *this; } constexpr void resize(size_type newSize) { assert(newSize <= CapacityV); size_type i = newSize < m_size ? newSize : m_size; for (; i < m_size; ++i) { (*this)[i].~T(); } for (; i < newSize; ++i) { new (&(m_data[i])) T; } m_size = newSize; } [[nodiscard]] constexpr pointer data() { return reinterpret_cast<T*>(&(m_data[0])); } [[nodiscard]] constexpr const_pointer data() const { return reinterpret_cast<const T*>(&(m_data[0])); } [[nodiscard]] constexpr reference operator[](size_type i) { assert(i < m_size); return (data()[i]); } [[nodiscard]] constexpr const_reference operator[](size_type i) const { assert(i < m_size); return (data()[i]); } [[nodiscard]] constexpr reference at(size_type i) { if (i >= m_size) { throw std::out_of_range(""); } return (data()[i]); } [[nodiscard]] constexpr const_reference at(size_type i) const { if (i >= m_size) { throw std::out_of_range(""); } return (data()[i]); } [[nodiscard]] constexpr reference front() { assert(m_size > 0); return (*this)[0]; } [[nodiscard]] constexpr const_reference front() const { assert(m_size > 0); return (*this)[0]; } [[nodiscard]] constexpr reference back() { assert(m_size > 0); return (*this)[m_size - 1]; } [[nodiscard]] constexpr const_reference back() const { assert(m_size > 0); return (*this)[m_size - 1]; } [[nodiscard]] constexpr iterator begin() { return data(); } [[nodiscard]] constexpr iterator end() { return data() + m_size; } [[nodiscard]] constexpr const_iterator begin() const { return data(); } [[nodiscard]] constexpr const_iterator end() const { return data() + m_size; } [[nodiscard]] constexpr const_iterator cbegin() const { return data(); } [[nodiscard]] constexpr const_iterator cend() const { return data() + m_size; } [[nodiscard]] constexpr reverse_iterator rbegin() { return reverse_iterator(end()); } [[nodiscard]] constexpr reverse_iterator rend() { return reverse_iterator(begin()); } [[nodiscard]] constexpr const_reverse_iterator rbegin() const { return const_reverse_iterator(end()); } [[nodiscard]] constexpr const_reverse_iterator rend() const { return const_reverse_iterator(begin()); } [[nodiscard]] constexpr const_reverse_iterator crbegin() const { return const_reverse_iterator(cend()); } [[nodiscard]] constexpr const_reverse_iterator crend() const { return const_reverse_iterator(cbegin()); } [[nodiscard]] constexpr bool empty() const { return m_size == 0; } [[nodiscard]] constexpr size_type size() const { return m_size; } [[nodiscard]] constexpr size_type capacity() const { return CapacityV; } constexpr void reserve(size_type n) { // do nothing // it's for interface compatibility } constexpr void clear() { for (int i = 0; i < m_size; ++i) { (*this)[i].~T(); } m_size = 0; } template<typename... ArgsTs> constexpr reference emplace_back(ArgsTs&& ... args) { assert(m_size < CapacityV); new (&(m_data[m_size])) T(std::forward<ArgsTs>(args)...); ++m_size; return back(); } constexpr reference push_back(const T& value) { assert(m_size < CapacityV); new (&(m_data[m_size])) T(value); ++m_size; return back(); } constexpr reference push_back(T&& value) { assert(m_size < CapacityV); new (&(m_data[m_size])) T(std::move(value)); ++m_size; return back(); } constexpr void pop_back() { assert(m_size > 0); (*this)[m_size-1].~T(); --m_size; } private: size_type m_size; StorageType m_data[CapacityV]; }; struct alignas(8) Vec2 { int x, y; constexpr Vec2() : x(0), y(0) { } constexpr Vec2(int x, int y) : x(x), y(y) { } constexpr bool operator==(const Vec2& other) const noexcept { return x == other.x && y == other.y; } constexpr bool operator!=(const Vec2& other) const noexcept { return !(*this == other); } constexpr Vec2& operator+=(const Vec2& other) { x += other.x; y += other.y; return *this; } constexpr Vec2 operator+(const Vec2& other) const { return Vec2{ x + other.x, y + other.y }; } constexpr Vec2& operator-=(const Vec2& other) { x -= other.x; y -= other.y; return *this; } constexpr Vec2 operator-(const Vec2& other) const { return Vec2{ x - other.x, y - other.y }; } constexpr Vec2& operator*=(int other) { x *= other; y *= other; return *this; } constexpr Vec2 operator*(int other) const { return Vec2{ x * other, y * other }; } }; enum struct Direction : std::uint8_t { North, NorthEast, East, SouthEast, South, SouthWest, West, NorthWest }; enum struct Directions : std::uint8_t { None = 0, North = 1, NorthEast = 2, East = 4, SouthEast = 8, South = 16, SouthWest = 32, West = 64, NorthWest = 128 }; constexpr std::array<Direction, 8> directions() { return { Direction::North, Direction::NorthEast, Direction::East, Direction::SouthEast, Direction::South, Direction::SouthWest, Direction::West, Direction::NorthWest }; } constexpr std::array<Direction, 4> baseDirections() { return { Direction::North, Direction::NorthEast, Direction::East, Direction::SouthEast, }; } constexpr bool isBaseDirection(Direction dir) { return static_cast<int>(dir) < static_cast<int>(Direction::South); } constexpr Direction oppositeDirection(Direction dir) { return static_cast<Direction>((static_cast<unsigned>(dir) + 4) & 0x7); } constexpr bool areParallel(Direction lhs, Direction rhs) { return lhs == rhs || lhs == oppositeDirection(rhs); } constexpr Directions operator~(Direction dir) { using T = std::underlying_type_t<Direction>; return static_cast<Directions>(~(1u << (static_cast<T>(dir)))); } constexpr Directions operator~(Directions dirs) { using T = std::underlying_type_t<Directions>; return static_cast<Directions>(~(static_cast<T>(dirs))); } constexpr Directions& operator|=(Directions& lhs, Direction rhs) { using T = std::underlying_type_t<Directions>; lhs = static_cast<Directions>((static_cast<T>(lhs) | (1 << static_cast<T>(rhs)))); return lhs; } constexpr Directions& operator&=(Directions& lhs, Direction rhs) { using T = std::underlying_type_t<Directions>; lhs = static_cast<Directions>((static_cast<T>(lhs) & (1 << static_cast<T>(rhs)))); return lhs; } constexpr Directions operator|(Directions lhs, Direction rhs) { using T = std::underlying_type_t<Directions>; return static_cast<Directions>((static_cast<T>(lhs) | (1 << static_cast<T>(rhs)))); } constexpr Directions operator&(Directions lhs, Direction rhs) { using T = std::underlying_type_t<Directions>; return static_cast<Directions>((static_cast<T>(lhs) & (1 << static_cast<T>(rhs)))); } constexpr Directions& operator|=(Directions& lhs, Directions rhs) { using T = std::underlying_type_t<Directions>; lhs = static_cast<Directions>((static_cast<T>(lhs) | static_cast<T>(rhs))); return lhs; } constexpr Directions& operator&=(Directions& lhs, Directions rhs) { using T = std::underlying_type_t<Directions>; lhs = static_cast<Directions>((static_cast<T>(lhs) & static_cast<T>(rhs))); return lhs; } constexpr Directions operator|(Directions lhs, Directions rhs) { using T = std::underlying_type_t<Directions>; return static_cast<Directions>((static_cast<T>(lhs) | static_cast<T>(rhs))); } constexpr Directions operator&(Directions lhs, Directions rhs) { using T = std::underlying_type_t<Directions>; return static_cast<Directions>((static_cast<T>(lhs) & static_cast<T>(rhs))); } namespace lookup { static constexpr Vec2 offsets[] = { { 0, -1 }, { 1, -1 }, { 1, 0 }, { 1, 1 }, { 0, 1 }, { -1, 1 }, { -1, 0 }, { -1, -1 } }; } constexpr Vec2 directionOffset(Direction dir) { return lookup::offsets[static_cast<int>(dir)]; } constexpr bool contains(Directions lhs, Direction rhs) { return (lhs & rhs) != Directions::None; } constexpr bool contains(Directions lhs, Directions rhs) { return (lhs & rhs) == rhs; } struct Board { static constexpr int size = 32; static constexpr Vec2 center = { size / 2, size / 2 }; static constexpr int lineLength = 4; static constexpr int offsets[] = { -1, size-1, size, size+ 1, 1, -size+1, -size, -size-1 }; static constexpr Vec2 initialDotsOffsets[] = { { -5, -1 }, { -5, 0 }, { -5, 1 }, { -5, 2 }, { -4, -1 }, { -4, 2 }, { -3, -1 }, { -3, 2 }, { -2, -4 }, { -2, -3 }, { -2, -2 }, { -2, -1 }, { -2, 2 }, { -2, 3 }, { -2, 4 }, { -2, 5 }, { -1, -4 }, { -1, 5 }, { 0, -4 }, { 0, 5 }, { 1, -4 }, { 1, -3 }, { 1, -2 }, { 1, -1 }, { 1, 2 }, { 1, 3 }, { 1, 4 }, { 1, 5 }, { 2, -1 }, { 2, 2 }, { 3, -1 }, { 3, 2 }, { 4, -1 }, { 4, 0 }, { 4, 1 }, { 4, 2 } }; static constexpr int directionOffset(Direction dir) { return offsets[static_cast<int>(dir)]; } constexpr Board() : m_lines{}, m_isDot{}, m_validMoves{}, m_possibleMoveStarts{}, m_numLines{} { reset(); } void collectUniqueValidMoves(std::vector<std::pair<std::uint16_t, Direction>>& out) const { for (auto i : m_possibleMoveStarts) { for (auto dir : baseDirections()) { if (contains(m_validMoves[i], dir)) { out.emplace_back(i, dir); } } } } constexpr void reset() { for (int x = 0; x < size; ++x) { for (int y = 0; y < size; ++y) { m_isDot[x * size + y] = false; m_lines[x * size + y] = Directions::None; m_validMoves[x * size + y] = Directions::None; } } // set the initial cross for (auto [x, y] : initialDotsOffsets) { m_isDot[(center.x + x) * size + center.y + y] = true; } m_numLines = 0; for (auto [x, y] : initialDotsOffsets) { addPossibleMovesOnDotPlaced((x + center.x) * size + y + center.y); } } constexpr bool isValidMove(Vec2 start, Direction dir) { start += center; const auto offset = ::directionOffset(dir); const auto forbiddenDir = oppositeDirection(dir); int dots = m_isDot[start.x * size + start.y]; for (int i = 0; i < lineLength; ++i) { const auto next = start + offset; dots += m_isDot[next.x * size + next.y]; if (contains(m_lines[next.x * size + next.y], forbiddenDir)) { return false; } start = next; } return dots >= 4; } constexpr void addLine(int start, Direction dir) { const auto offset = directionOffset(dir); const auto oppdir = oppositeDirection(dir); removePossibleMovesWhenLinePlaced(start, dir); bool hasNewDot = false; int dot = 0; if (!m_isDot[start]) { hasNewDot = true; dot = start; m_isDot[start] = true; } for (int i = 0; i < lineLength; ++i) { const auto next = start + offset; if (!m_isDot[next]) { hasNewDot = true; dot = next; m_isDot[next] = true; } m_lines[start] |= dir; m_lines[next] |= oppdir; start = next; } ++m_numLines; if (hasNewDot) { addPossibleMovesOnDotPlaced(dot); } } constexpr void addLine(Vec2 startp, Direction dir) { assert(isValidMove(startp, dir)); startp += center; auto start = startp.x * size + startp.y; addLine(start, dir); } constexpr int numMoves() const { return m_numLines; } void print(std::ostream& out) const { static constexpr char chars[] = " o--||||\\\\\\\\////////XXXXXXXX"; static constexpr unsigned none = 0; static constexpr unsigned dot = 1; static constexpr unsigned horizontal = 2; static constexpr unsigned vertical = 4; static constexpr unsigned diagonal = 8; static constexpr unsigned antidiagonal = 16; unsigned display[size * 2][size * 2]; for (int x = 0; x < size*2; ++x) { for (int y = 0; y < size*2; ++y) { display[x][y] = none; } } for (int x = 0; x < size; ++x) { for (int y = 0; y < size; ++y) { if (m_isDot[x * size + y]) { const Directions lines = m_lines[x * size + y]; const int xx = x * 2 + 1; const int yy = y * 2 + 1; display[xx][yy] |= dot; if (contains(lines, Direction::North)) display[xx][yy - 1] |= vertical; if (contains(lines, Direction::East)) display[xx + 1][yy] |= horizontal; if (contains(lines, Direction::South)) display[xx][yy + 1] |= vertical; if (contains(lines, Direction::West)) display[xx - 1][yy] |= horizontal; if (contains(lines, Direction::NorthEast)) display[xx + 1][yy - 1] |= antidiagonal; if (contains(lines, Direction::SouthEast)) display[xx + 1][yy + 1] |= diagonal; if (contains(lines, Direction::SouthWest)) display[xx - 1][yy + 1] |= antidiagonal; if (contains(lines, Direction::NorthWest)) display[xx - 1][yy - 1] |= diagonal; } } } for (int y = 0; y < size * 2; ++y) { for (int x = 0; x < size * 2; ++x) { out << chars[display[x][y]]; } out << '\n'; } } private: Directions m_lines[size*size]; bool m_isDot[size*size]; Directions m_validMoves[size*size]; FixedVector<std::uint16_t, size*size> m_possibleMoveStarts; int m_numLines; constexpr void removePossibleMovesWhenLinePlaced(int start, Direction dir) { auto offset = directionOffset(dir); if (!isBaseDirection(dir)) { start += offset * lineLength; offset = -offset; dir = oppositeDirection(dir); } const auto oppdir = oppositeDirection(dir); { // remove all moves that would pass through the line // on both sides separately auto rightStart = start + offset * lineLength; for (int i = 0; i < lineLength * 2 - 1; ++i) { rightStart -= offset; if (contains(m_validMoves[rightStart], dir)) { removePossibleMoveStart(rightStart); } m_validMoves[rightStart] &= ~dir; } } { auto leftStart = start; for (int i = 0; i < lineLength * 2 - 1; ++i) { leftStart += offset; m_validMoves[leftStart] &= ~oppdir; } } } constexpr void addPossibleMovesOnDotPlaced(int point) { for (Direction dir : baseDirections()) { const auto offset = directionOffset(dir); const auto oppdir = oppositeDirection(dir); auto start = point - offset * lineLength; int dots = 0; int lines = 0; int t = 0; for (; t < lineLength; ++t) { dots += m_isDot[start]; lines += contains(m_lines[start], oppdir); start += offset; } for (; t < lineLength * 2 + 1; ++t) { auto end = start - offset * lineLength; dots += m_isDot[start]; lines += contains(m_lines[start], oppdir); lines -= contains(m_lines[end], oppdir); if ((dots >= lineLength) & (lines == 0)) { if (!contains(m_validMoves[end], dir)) { addPossibleMoveStart(end); } m_validMoves[start] |= oppdir; m_validMoves[end] |= dir; } dots -= m_isDot[end]; start += offset; } } } constexpr void addPossibleMoveStart(int start) { m_possibleMoveStarts.push_back(start); } constexpr void removePossibleMoveStart(int start) { auto it = m_possibleMoveStarts.begin(); while (*it != start) ++it; // we know that there is an entry equal to start *it = m_possibleMoveStarts.back(); m_possibleMoveStarts.pop_back(); } }; // 100000 random playouts take around 4 seconds on an older processor. void playout(int n, int nthreads) { int best = 0; std::mutex mutex; auto work = [&best, n=n/nthreads, &mutex](std::uint64_t seed) { auto rng = std::mt19937_64(seed); std::vector<std::pair<std::uint16_t, Direction>> moves; Board baseBoard; for (int i = 0; i < n; ++i) { Board board = baseBoard; for (;;) { moves.clear(); board.collectUniqueValidMoves(moves); if (moves.empty()) { int m = board.numMoves(); std::unique_lock lock(mutex); if (m > best) { std::cout << m << '\n'; board.print(std::cout); best = m; } break; } auto move = moves[std::uniform_int_distribution<int>(0, moves.size() - 1)(rng) % moves.size()]; board.addLine(move.first, move.second); } } }; std::vector<std::thread> threads; std::random_device rng; for (int i = 0; i < nthreads; ++i) { threads.emplace_back(work, rng()); } for (auto& thread : threads) { if (thread.joinable()) { thread.join(); } } } void singlePlayout() { std::mt19937_64 rng(1234); Board board; board.print(std::cout); for (;;) { std::vector<std::pair<std::uint16_t, Direction>> moves; board.collectUniqueValidMoves(moves); std::cout << "Moves: " << moves.size() << '\n'; if (moves.empty()) { std::cout << board.numMoves() << '\n'; break; } auto move = moves[std::uniform_int_distribution<int>(0, moves.size() - 1)(rng) % moves.size()]; board.addLine(move.first, move.second); } board.print(std::cout); } int main() { auto t0 = std::chrono::high_resolution_clock::now(); playout(100000, 4); auto t1 = std::chrono::high_resolution_clock::now(); std::cout << (t1 - t0).count() / 1e9 << "s\n"; //singlePlayout(); return 0; }
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