Compilare: main.cpp: In function 'void KMP_bullshit(std::string, std::string)': main.cpp:40:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for (int k = 0; k < a.size(); ++k) | ~~^~~~~~~~~~ main.cpp:42:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | while (i < a.size()) | ~~^~~~~~~~~~ main.cpp:50:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | while (i < s.size()) | ~~^~~~~~~~~~ main.cpp:55:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | else if (i < s.size() && a[j] != s[i]) | ~~^~~~~~~~~~ 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 = 1; i < s.size(); ++i, cout << '\n') | ~~^~~~~~~~~~ main.cpp:69:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for (int j = 1; j < s.size(); ++j) | ~~^~~~~~~~~~ main.cpp:71:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for (int i = 1; i < s.size(); ++i) | ~~^~~~~~~~~~