代码

#pragma GCC optimize("Ofast")
#pragma GCC target("sse4","sse4.1","sse4.2","sse3","sse2","sse")
//#pragma GCC target("avx","sse4","sse4.1","sse4.2","ssse3")
//#pragma GCC target("f16c")
//#pragma GCC target("fma","avx2")
//#pragma GCC target("xop","fma4")
int plus(register const int a,register const int b){
    return a + b;
}

评测结果