Compilare: user.cpp: In function ‘bool dijkstra()’: user.cpp:36:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<V[nod].size();i++) ^ user.cpp: In function ‘void bellman_ford()’: user.cpp:80:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<c.size();i++) ^ user.cpp:85:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<V[nod].size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:103:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fmcm.in","r",stdin); ^ user.cpp:104:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&n,&m,&S,&D); ^ user.cpp:108:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^ user.cpp:109:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&fw[x][y],&C[x][y]); ^