Compilare: user.cpp: In function ‘int DFS(int, int)’: user.cpp:18:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v[nod].size(); i++) ~~^~~~~~~~~~~~~~~ user.cpp:32:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ~~^~~~~~~~~~~~~~~ user.cpp:34:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(lant[care[v[nod][i]]].size() > maxim) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ user.cpp:42:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ~~^~~~~~~~~~~~~~~ user.cpp: In function ‘int creez_dinamica(int)’: user.cpp:57:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int query(int, int)’: user.cpp:85:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int DFS(int, int)’: user.cpp:40:21: warning: ‘pe_care’ may be used uninitialized in this function [-Wmaybe-uninitialized] lant[pe_care].push_back(nod); ^