Compilare: main.cpp: In function 'int main()': main.cpp:26:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(G[i].size() < deg) ~~~~~~~~~~~~^~~~~ main.cpp:36:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i < G[negustor].size() && i < k ; i ++ , nr ++) ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:39:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0 ; j < T[magazin].size() ; j ++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:46:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(G[i].size() > 0 && G[i].size() < deg) ~~~~~~~~~~~~^~~~~ main.cpp:10:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("negot.in" , "r" , stdin); ^ main.cpp:11:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("negot.out" , "w" , stdout); ^ main.cpp:13:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d" , &n , &m , &k); ^ main.cpp:16:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &t); ^ main.cpp:19:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &x); ^