Compilare: main.cpp: In function 'void dfs(int)': main.cpp:13:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'bool verifica()': main.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v.size(); i++) ~^~~~~~~~~ main.cpp:30:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<v.size(); j++) ~^~~~~~~~~ main.cpp:37:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<sol.size(); j++) ~^~~~~~~~~~~ main.cpp:39:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0; t<g[sol[j]].size(); t++) ~^~~~~~~~~~~~~~~~~ main.cpp:46:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<v.size(); ++j) ~^~~~~~~~~