Compilare: main.cpp: In function 'int main()': main.cpp:22:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(j=0; j<v[a%prim].size(); j++) | ~^~~~~~~~~~~~~~~~~ main.cpp:29:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(j=0; j<v[b%prim].size(); j++) | ~^~~~~~~~~~~~~~~~~ main.cpp:40:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for(j=0; j<v[r%prim].size(); j++) | ~^~~~~~~~~~~~~~~~~