Compilare: main.cpp: In function 'int main()': main.cpp:20:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int i=0;i<s.size();i++){ | ~^~~~~~~~~ main.cpp:43:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(int i=1;i<(v.size());i++){ | ~^~~~~~~~~~~ main.cpp:23:9: warning: unused variable 'pow' [-Wunused-variable] 23 | int pow=9; | ^~~ main.cpp:24:9: warning: unused variable 'sum' [-Wunused-variable] 24 | int sum=0; | ^~~