Compilare: main.cpp: In function 'void prec(long long int)': main.cpp:16:18: 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] 16 | for(i=poz+1;i<s.size();i++){ | ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:29:14: 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] 29 | for(i=0;i<s.size();i++){ | ~^~~~~~~~~ main.cpp:36:18: 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] 36 | for(j=i;j<s.size();j++) rasp+=(i+1)*(j-k[j]+1); | ~^~~~~~~~~ main.cpp:27:9: warning: unused variable 'n' [-Wunused-variable] 27 | int n,i,j,rasp=0; | ^