#pragma GCC optimize(3,"Ofast","inline")






#pragma GCC target("avx")
#pragma GCC optimize(2,3,"Ofast","inline","-ffast-math")
#pragma GCC target("sse2,sse3,sse4,mmx")
#pragma omp parallel for
#pragma omp parallel num_threads(thread_count)
#pragma omp critical
#pragma omp parallel for reduction(+:sum)