Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:32:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<GN[nod].size(); ++i) ^ user.cpp: In function ‘int rezolvaCiclu(int, int)’: user.cpp:46:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<G[a].size(); ++j) //Daca exista muchia (a,b) si in graful orientat ^ user.cpp:75:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<GN[b].size(); ++j) ^ user.cpp:87:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<G[a].size(); ++j) ^ user.cpp:98:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<G[b].size(); ++j) ^ user.cpp: In function ‘void initializare()’: user.cpp:110:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biperm.in", "rt", stdin); ^ user.cpp:111:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biperm.out", "wt", stdout); ^ user.cpp:113:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:120:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ user.cpp:124:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^