Compilare: main.cpp: In function 'void buildLPS(std::vector<int>&, std::__cxx11::string)': main.cpp:10:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < a.length(); ++i) { ~~^~~~~~~~~~~~ main.cpp:13:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1, j = 0; i < a.length(); ++i) { ~~^~~~~~~~~~~~ main.cpp: In function 'void kmp(std::vector<int>&, std::vector<int>, std::__cxx11::string, std::__cxx11::string)': main.cpp:21:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0, j = 0; j < b.length();) { ~~^~~~~~~~~~~~ main.cpp:27:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == a.size()){ ~~^~~~~~~~~~~