Compilare: main.cpp: In function 'int32_t main()': main.cpp:17:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for (int i=0; i<s1.size(); i++) | ~^~~~~~~~~~ main.cpp:30:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for (int i=0; i<s1.size(); i++) | ~^~~~~~~~~~ main.cpp:41:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int i=s1.size(); i<s2.size(); i++) | ~^~~~~~~~~~ main.cpp:48:20: 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] 48 | for (int i=0; i<ans.size() && i<1000; i++) | ~^~~~~~~~~~~