UVa 10696 - f91

// UVa 10696 - f91

#include <stdio.h>

#define datatype unsigned long long int

int main() {
	datatype n;
	scanf("%llu", &n);
	while (n) {
		if (n > 100)
			printf("f91(%llu) = %llu\n", n, n - 10);
		else
			printf("f91(%llu) = 91\n", n);
		scanf("%llu", &n);
	}
	return 0;
}