Compilare: main.cpp: In function 'int dfs(int, int)': main.cpp:17:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for (int i=0;i<v[nod].size();++i) | ~^~~~~~~~~~~~~~ main.cpp:19:1: warning: no return statement in function returning non-void [-Wreturn-type] 19 | } | ^ main.cpp: In function 'int main()': main.cpp:73:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 73 | for (i=1;i<=19;++i) | ^~~ main.cpp:78:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 78 | norm(0); | ^~~~