Compilare: main.cpp: In function 'bool dfs(ll)': main.cpp:29:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i = 0; i<a[x].size(); i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:64:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 64 | for(int i = 0; i<n; i++) cout << ans[i] << " "; cout << "\n"; | ^~~ main.cpp:64:50: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 64 | for(int i = 0; i<n; i++) cout << ans[i] << " "; cout << "\n"; | ^~~~