Compilare: main.cpp: In function 'void lps()': main.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | while (i < a.size()) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:36:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | while (i < b.size()) | ~~^~~~~~~~~~ main.cpp:40:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | if (j == a.size()) ans.push_back(i - j), j = l[j - 1]; | ~~^~~~~~~~~~~