Compilare: main.cpp: In function 'int main()': main.cpp:13:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for (int i=0; i<s.size(); i++) | ~^~~~~~~~~ main.cpp:16:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int i=1; i<=s.size(); i++) | ~^~~~~~~~~~ main.cpp:20:20: 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=1; i<=s.size(); i++) | ~^~~~~~~~~~ main.cpp:28:17: warning: variable 'ok' set but not used [-Wunused-but-set-variable] 28 | int ok=0; | ^~ main.cpp:62:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | for (int i=1; i<=s.size(); i++) | ~^~~~~~~~~~ main.cpp:19:10: warning: array subscript 10 is above array bounds of 'long long int [10]' [-Warray-bounds] 19 | vf[10]=1; | ~~~~~^ main.cpp:5:21: note: while referencing 'vf' 5 | long long n,k,v[22],vf[10],fact[22],pr,ctt; | ^~