Compilare: main.cpp: In function 'void dfs1(int)': main.cpp:25:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[nod].size();j++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:36:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<vt[nod].size();j++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:47:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(!viz[i]) ^~ main.cpp:49:11: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' while(!s.empty()) ^~~~~ main.cpp:61:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[i].size();j++) ~^~~~~~~~~~~~ main.cpp:88:15: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:90:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' out<<"\n"; ^~~