Compilare: main.cpp: In function 'int main()': main.cpp:142:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("hipersimetrie.in", "r", stdin); ^ main.cpp:143:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("hipersimetrie.out", "w", stdout); ^ main.cpp:145:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %s", &n, s); ^