Compilare: user.cpp: In function ‘void bf()’: user.cpp:20:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[k].size();i++) ^ user.cpp: In function ‘void Afis()’: user.cpp:31:19: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(v[i]>=n&&sol[i]<=0||!g) {cout<<"Ciclu negativ!";return;} ^ user.cpp: In function ‘int main()’: user.cpp:37:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bellmanford.in","r",stdin); ^ user.cpp:38:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bellmanford.out","w",stdout); ^ user.cpp:39:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:41:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&x,&y,&cost); ^