Compilare: main.cpp: In function 'int kmp(std::string, const string&, int)': main.cpp:48:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for (int i = 1; i < pi.size(); i++) { | ~~^~~~~~~~~~~ main.cpp:60:44: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for (int i = 2 * pattern.size() + r; i < pi.size(); i++) { | ~~^~~~~~~~~~~ main.cpp:61:19: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | if (pi[i] == pattern.size())