Compilare: main.cpp: In function 'int main()': main.cpp:65:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for(int x = 0; x<(s.size()/3); x++) { | ~^~~~~~~~~~~~~ main.cpp:68:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for(int y = x + 1;y<(s.size() - 1 - x - x);y++){ | ~^~~~~~~~~~~~~~~~~~~~~~~