Compilare: main.cpp:37:0: warning: ignoring #pragma omp parallel [-Wunknown-pragmas] #pragma omp parallel main.cpp:61:0: warning: ignoring #pragma omp parallel [-Wunknown-pragmas] #pragma omp parallel main.cpp: In function 'int main()': main.cpp:23:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ubergraf.in", "r", stdin); ^ main.cpp:24:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ubergraf.out", "w", stdout); ^ main.cpp:26:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &p); ^