Compilare: main.cpp: In function 'void desc(ll)': main.cpp:13:9: warning: statement has no effect [-Wunused-value] 13 | for(d;d*d<=x;d++) | ^ main.cpp: In function 'void bt(ll, ll, ll)': main.cpp:30:19: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare] 30 | if(divi.size()==i) | ~~~~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:54:17: 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] 54 | for(ll i=0;i<sol.size();i++) | ~^~~~~~~~~~~