Compilare: main.cpp: In function 'int main()': main.cpp:47:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i=0;i<=s.size()-k;i++) | ~^~~~~~~~~~~~ main.cpp:80:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | for(int i=0;i<V.size();i++) | ~^~~~~~~~~ main.cpp:45:13: warning: unused variable 'cnt' [-Wunused-variable] 45 | int cnt=0; | ^~~