Compilare: main.cpp: In function 'std::vector<long long int> lps(std::string)': main.cpp:20:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int i = 1; i < a.size();){ | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:40:20: warning: 'n' is used uninitialized [-Wuninitialized] 40 | int n, st = 1, dr = n; | ^~ main.cpp:40:9: note: 'n' declared here 40 | int n, st = 1, dr = n; | ^