Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:20:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[nod].size();i++){ ~^~~~~~~~~~~~~~ user.cpp:34:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[nod].size();i++){ ~^~~~~~~~~~~~~~ user.cpp:43:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[nod].size();i++) ~^~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:69:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<inceputuri.size();i++) ~^~~~~~~~~~~~~~~~~~ user.cpp:72:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<critice.size();i++) ~^~~~~~~~~~~~~~~ user.cpp:52:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pamant.in","r",stdin); ^ user.cpp:53:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pamant.out","w",stdout); ^ user.cpp:54:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:56:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^