Compilare: main.cpp: In function 'bool comp(std::string&, std::string&)': main.cpp:19:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int i = 0; i < x.length(); ++ i) | ~~^~~~~~~~~~~~ main.cpp: In function 'bool check(std::string, std::string)': main.cpp:33:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(int i = 0; i < x.length(); ++ i) | ~~^~~~~~~~~~~~ main.cpp:37:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | if(itr == y.length()) | ~~~~^~~~~~~~~~~~~ main.cpp: In function 'void solution()': main.cpp:55:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for(int i = 0; i < v.size(); ++ i) | ~~^~~~~~~~~~ main.cpp:59:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(int j = 0; j < v.size(); ++ j) | ~~^~~~~~~~~~