Compilare: main.cpp: In function 'bool este(long long int, std::string, long long int)': main.cpp:29:22: 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] 29 | for(int i = k; i < s.size(); ++i) { | ~~^~~~~~~~~~ main.cpp: In function 'bool solutie(long long int, long long int)': main.cpp:51:22: 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] 51 | for(int i = k; i < sir[0].size(); ++i) { | ~~^~~~~~~~~~~~~~~