Compilare: user.cpp: In function ‘bool findAugPath()’: user.cpp:41:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[ nc ].size(); i++) ^ user.cpp: In function ‘void findMaxFlow()’: user.cpp:88:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[ N ].size(); i++) ^ user.cpp: In function ‘void citire()’: user.cpp:15:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&N,&M); ^ user.cpp:18:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int x, y, z; scanf("%d %d %d",&x,&y, &z); ^ user.cpp: In function ‘int main()’: user.cpp:104:36: 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:105:38: 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); ^