10696-f91

#include <stdio.h>
int main()
{  int n;
    while(scanf("%d", &n) == 1 && n != 0)
    {
        if(n <= 101)
            printf("f91(%d) = 91\n", n);
        else
            printf("f91(%d) = %d\n", n, n-10);
    }
    return 0;
}