Compilare: main.cpp: In function 'int main()': main.cpp:135:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bombar.in", "r", stdin); ^ main.cpp:136:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bombar.out", "w", stdout); ^ main.cpp:138:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] int N; scanf("%d", &N); ^