Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:40:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[ nod ].size(); i++) ^ user.cpp: In function ‘void construiesteGrafTranspus()’: user.cpp:54:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j < G[ i ].size(); j++) ^ user.cpp: In function ‘void dfsTranspus(int, int)’: user.cpp:68:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < GT[ nod ].size(); i++) ^ user.cpp: In function ‘void readData()’: user.cpp:15:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ctc.in","r",stdin); ^ user.cpp:16:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&N,&M); ^ user.cpp:28:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&x,&y); ^ user.cpp: In function ‘int main()’: user.cpp:103:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ctc.out","w",stdout); ^