Compilare: main.cpp: In function 'int main()': main.cpp:16:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int i=0;i<s1.size();i++) | ~^~~~~~~~~~ main.cpp:29:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int i=0;i<s1.size();i++){ | ~^~~~~~~~~~ main.cpp:37:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for (int i=s1.size();i<s2.size();i++){ | ~^~~~~~~~~~ main.cpp:43:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for (int i=0;i<ans.size();i++) | ~^~~~~~~~~~~