Compilare: user.cpp: In function ‘int BFS(int)’: user.cpp:32:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < V[ nod ].size(); ++i ) { ^ user.cpp: In function ‘int main()’: user.cpp:64:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < V[ n ].size(); ++i ) { ^ user.cpp:69:18: warning: overflow in implicit constant conversion [-Woverflow] mini = INFI; ^ user.cpp:47:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "maxflow.in", "r", stdin ); ^ user.cpp:48:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "maxflow.out", "w", stdout ); ^ user.cpp:52:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d%d",&n,&m ); ^ user.cpp:54:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d%d%d",&x,&y,&c ); ^