include
using namespace std;
int main()
int r,int k;
{const double PI=3.1415;
girth=2PIr;
area=PIrr;}
cout<<"girth=,area=,girth=&&area=";
cin>>k;
if(k=1){
cout<<"area="<<endl;}
if(k=2){
cout<<"girth="<<endl;}
if(k=3){
cout<<"girth=&&area="<<endl;}
return 0;