Compilare: main.cpp: In function 'void dfs(int)': main.cpp:64:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<V[node].size();i++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'void afisare()': main.cpp:87:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol[1].size();i++) ~^~~~~~~~~~~~~~ main.cpp:90:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {for(j=0;j<sol[i].size();j++) ~^~~~~~~~~~~~~~ main.cpp:92:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ii=0;ii<V[sol[i][j]].size();ii++) ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:107:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<sol[i].size();j++) ~^~~~~~~~~~~~~~ main.cpp:102:7: warning: 'ok' may be used uninitialized in this function [-Wmaybe-uninitialized] if(!ok) ^~