Compilare: main.cpp: In function 'void dfs(ll, ll)': main.cpp:110:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 110 | for (ll i=0;i<gr[x].size();i++) | ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:167:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 167 | for (ll j=0;j<gr[i].size();j++) | ~^~~~~~~~~~~~~ main.cpp:194:19: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 194 | for (i=0;i<gr[rad].size();i++) | ~^~~~~~~~~~~~~~~