Compilare: main.cpp: In function 'void umplere(int)': main.cpp:31:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v[nod].size() ; i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int, int)': main.cpp:45:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v[nod].size() ; i++) ~~^~~~~~~~~~~~~~~ main.cpp:70:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j < col3.size() ; j++) ~~^~~~~~~~~~~~~