HDU 5170 GTY's math problem 水题

题目链接：

hdu: http://acm.hdu.edu.cn/showproblem.php?pid=5170

bc(中文):http://bestcoder.hdu.edu.cn/contests/contest_chineseproblem.php?cid=567&pid=1001

题解：

先用java大数幂写的，t了

 1 import java.util.*;
 2 import java.math.*;
 3 public class Main {
 4     public static void main(String args[]){
 5         Scanner cin = new Scanner(System.in);
 6         BigInteger a,c;
 7         int b,d;
 8         
 9         while(cin.hasNext()){
10             a=cin.nextBigInteger();
11             b=cin.nextInt();
12             c=cin.nextBigInteger();
13             d=cin.nextInt();
14             
15             a=a.pow(b);
16             c=c.pow(d);
17             //四则运算
18             
19             if(a.compareTo(c)>0) System.out.println(">");
20             else if(a.compareTo(c)<0) System.out.println("<");
21             else System.out.println("=");
22         }
23     }
24 }

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