Compilare: main.cpp: In function 'std::string genr(ll)': main.cpp:79:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 79 | if(v.size() != l + 1){ | ~~~~~~~~~^~~~~~~~ main.cpp: In function 'int main()': main.cpp:123:25: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare] 123 | if(s.size() != len) return 11; | ~~~~~~~~~^~~~~~