Compilare: main.cpp: In function 'void KMP_bullshit(std::string, std::string, int)': main.cpp:41:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | while (i < a.size()) | ~~^~~~~~~~~~ main.cpp:49:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for (i = 0; i < s.size(); ++i) | ~~^~~~~~~~~~ main.cpp:55:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | if (j == a.size()) | ~~^~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:68:23: 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 i = 0; i < s.size(); ++i) | ~~^~~~~~~~~~