Compilare: main.cpp: In function 'int main()': main.cpp:47:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i = 0 ; i < ans0.size() ; ++ i) fout << "2 " << ans0[i] << '\n'; | ~~^~~~~~~~~~~~~ main.cpp:49:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int i = 0 ; i < ans1.size() ; ++ i) fout << "1 " << ans1[i] << '\n'; | ~~^~~~~~~~~~~~~