debug: g++ --std=c++17 -g main.cpp -o main release: g++ --std=c++17 -march=native -O2 main.cpp -o main release_neon: g++ --std=c++17 -funsafe-math-optimizations -march=armv8-a+fp+simd -mtune=cortex-a72 -O2 main.cpp -o main release_clang: clang++ --std=c++17 -O2 main.cpp -o main release_clang_neon: clang++ --std=c++17 -funsafe-math-optimizations -march=armv8-a+fp+simd -mtune=cortex-a72 main.cpp -O2 -o main