/*
 * 
 * Ackermann's Function Calculator
 * 	<josh@thenullbyte.org>
 * 
 */

#include <iostream>
using namespace std;


//Ackermann's Function
int A(int m, int n) {
	if(m == 0) return(n+1);
	if(n == 0) return(A(m-1, 1));
	return(A(m-1, A(m, n-1)));
}

int main() {
	int m, n;
	
	printf("Ackermann's Function Calculator\n\n");
	
	printf("First Agrument: ");
	scanf("%d", &m);
	
	getchar();
	
	printf("Second Argument: ");
	scanf("%d", &n);
	
	printf("A(%d, %d): %d\n\n",m ,n, A(m, n));
}