#include<bits/stdc++.h>
using namespace std;
int main()
{
    long long a,b,c,d,e,f,i,j,k,l;
    while(1)
    {
        cin>>a;
        if(a==0) break;
        else if (a<=100)
        {
            printf("f91(%d) = 91\n",a);
        }
        else
        {
            printf("f91(%d) = ",a);
            printf("%d\n",a-10);
        }
    }
    return 0;
}