Compilare: main.cpp: In function 'int main()': main.cpp:72:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<ans.size()-1; i++){ ~^~~~~~~~~~~~~ main.cpp:85:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<anss.size(); i++) ~^~~~~~~~~~~~ main.cpp:29:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("fotbal2.in", "r", stdin); ^ main.cpp:30:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fotbal2.out", "w", stdout); ^ main.cpp:32:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:34:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^