Compilare: main.cpp: In function 'int main()': main.cpp:50:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for ( j = 0; j < s.size(); j++ ) { | ~~^~~~~~~~~~ main.cpp:64:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for ( int ii = 0; ii < lens.size() && i - lens[ii] >= 0; ii++ ) { | ~~~^~~~~~~~~~~~~