Compilare: user.cpp: In function ‘void BellmanFord()’: user.cpp:22:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[node].size();i++) ^ user.cpp: In function ‘void DFS(int)’: user.cpp:35:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<graph[node].size();i++) ^ user.cpp: In function ‘void AntiDFS(int)’: user.cpp:45:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<invertedGraph[node].size();i++) ^ user.cpp: In function ‘void StronglyConnectedComponents()’: user.cpp:52:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<g[i].size();j++) ^ user.cpp: In function ‘int ComputeAnswer()’: user.cpp:70:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<graph[i].size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:76:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zeroc.in","r",stdin); ^ user.cpp:77:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zeroc.out","w",stdout); ^ user.cpp:79:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:81:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&a,&b,&c); ^