Compilare: main.cpp: In function 'void kmp()': main.cpp:56:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | while(i + pi[i] < s.size() && s[i + pi[i]] == s[pi[i]]) | ~~~~~~~~~~^~~~~~~~~~ main.cpp: In function 'void Test()': main.cpp:75:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for(i = 0 ; i + 1 < s.size() ; i++) | ~~~~~~^~~~~~~~~~ main.cpp:79:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 79 | for(j = i + 1 ; j + lg - 1 < s.size() ; j += lg) | ~~~~~~~~~~~^~~~~~~~~~