学步园

import java.math.BigInteger;
import java.math.BigDecimal;
import java.util.Scanner;
public class Main {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
    Scanner input = new Scanner(System.in); 
int b;
BigInteger n,m;
while(input.hasNext())
{
	b = input.nextInt();
	if(b == 0)
		break;
	n = input.nextBigInteger(b);
	m = input.nextBigInteger(b);
     n = 	n.mod(m);  //我常写成 n.mod(m);  以后记住啊啊啊。。。n,m运算后都没变，运算结果要赋给一个变量啊
	System.out.println(n.toString(b));
}
	}

}