Compilare: main.cpp: In function 'int main()': main.cpp:40:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for (i = k - 1; i < s.size(); i += k) | ~~^~~~~~~~~~ main.cpp:96:46: warning: 'dr' may be used uninitialized in this function [-Wmaybe-uninitialized] 96 | cout << lmax << "\n" << st << ' ' << dr; | ^~ main.cpp:96:39: warning: 'st' may be used uninitialized in this function [-Wmaybe-uninitialized] 96 | cout << lmax << "\n" << st << ' ' << dr; | ^~~