Compilare: main.cpp: In function 'int main()': main.cpp:23:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int j = 0; j < s[i].size(); j++) | ~~^~~~~~~~~~~~~ main.cpp:49:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int j = 1; j < ans.size(); j++) | ~~^~~~~~~~~~~~