Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:20:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vecini[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int, int, int, int)': main.cpp:41:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vecini[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp:52:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vecini[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~