Compilare: main.cpp: In function 'void kmp(std::string&)': main.cpp:61:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for (int i = 1 ; i < s.length() ; ++ i) | ~~^~~~~~~~~~~~ main.cpp: In function 'void Solve()': main.cpp:80:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | if (pi[cuv[j].length() + i + 1] == cuv[j].length()) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~