Compilare: main.cpp: In function 'void bfs(int)': main.cpp:18:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[s].size(); i++) ~^~~~~~~~~~~~ main.cpp:20:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(!viz[v[s][i]])q.push(v[s][i]), viz[v[s][i]]=1;nod++; ^~ main.cpp:20:53: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(!viz[v[s][i]])q.push(v[s][i]), viz[v[s][i]]=1;nod++; ^~~