#include<iostream>
using namespace std;
int main()
{
 string i;
 double p;
 int c;
 cin>>i;
 cin>>p;
 if(p>0)
 {
 if(i=="adult")
 {
     cout<<p;
 }
 else
 {
    cout<<"Invalid input";
}

else
{
    cout<<"Invalid input";
}
return 0;
}