题目大意：关于大数的mod和进制转换，直接使用Java的BigInteger类，正在copy式学习中...

1 import java.io.*; 2 import java.util.*; 3 import java.math.*; 4  5 class Main 6 { 7     public static void main(String[] args) 8     { 9         Scanner sc = new Scanner(System.in);10         while (true)11         {12             int base = sc.nextInt();13             if (base == 0)  break;14             String p_str = sc.next();15             BigInteger p = new BigInteger(p_str, base);16             String m_str = sc.next();17             BigInteger m = new BigInteger(m_str, base);18             System.out.println((p.mod(m)).toString(base));19         }20     }21 }