SGU 112 a^b - b^a

SGU_112

    用Java的BigInteger很容易实现。

import java.math.BigInteger;
import java.util.Scanner;

public class Solution {
    public static void main(String[] args) {
        Scanner cin = new Scanner(System.in);
        int a, b;
        while(cin.hasNext())
        {
            a = cin.nextInt();
            b = cin.nextInt();
            System.out.println(BigInteger.valueOf(a).pow(b).add(BigInteger.valueOf(b).pow(a).negate()));
        }
    }
}