Compilare: main.cpp: In function 'std::vector<int> precalc(const std::string&)': main.cpp:12:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | while(i<s.size()) | ~^~~~~~~~~ main.cpp: In function 'void kmp(const std::string&, const std::string&)': main.cpp:40:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | while(i<b.size()) | ~^~~~~~~~~ main.cpp:58:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | if(j==a.size()) | ~^~~~~~~~~~