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:62:19: 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] 62 | if (pi[i] == pattern.size()) In file included from /usr/include/c++/10/cassert:44, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33, from main.cpp:24: main.cpp: In function 'int main()': main.cpp:93:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | assert(r_so_far <= s1.size()); | ~~~~~~~~~^~~~~~~~~~~~