UVA 10494-If We Were a Child Again（一流的塔尔苏斯）

川长思鸟来 2022-04-10 10:12 126阅读 0赞

**Problem C**  
**If We Were a Child Again**

**Input:** standard input  
**Output:** standard output

**Time Limit:** 7 seconds

<table style="color:rgb(51,51,51);"> 
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 <td colspan="2"> “Oooooooooooooooh! If I could do the easy mathematics like my school days!! I can guarantee, that I’d not make any mistake this time!!” Says a smart university student!! But his teacher even smarter – “Ok! I’d assign you such projects in your software lab. Don’t be so sad.” “Really!!” - the students feels happy. And he feels so happy that he cannot see the smile in his teacher’s face. &nbsp; &nbsp; </td> 
 <td><img alt="" src="http://uva.onlinejudge.org/external/104/p10494.gif" width="204" height="213"></td> 
 </tr> 
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 <td colspan="3"> The Problem &nbsp; The first project for the poor student was to make a calculator that can just perform the basic arithmetic operations. &nbsp; But like many other university students he doesn’t like to do any project by himself. He just wants to collect programs from here and there. As you are a friend of him, he asks you to write the program. But, you are also intelligent enough to tackle this kind of people.&nbsp;You agreed to write only the (integer) division and mod (% in C/C++) operations for him. </td> 
 </tr> 
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 <td colspan="3"> &nbsp; Input Input is a sequence of lines. Each line will contain an input number. One or more spaces. A sign (division or mod). Again spaces. And another input number. Both the input numbers are non-negative integer. The first one may be arbitrarily long. The second number&nbsp;n&nbsp;will be in the range (0 &lt; n &lt; 231). </td> 
 </tr> 
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 <td colspan="3"> &nbsp; <h5>&nbsp;</h5> <h5>Output</h5> A line for each input, each containing an integer. See the sample input and output. Output should not contain any extra space. </td> 
 </tr> 
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 <td> &nbsp; <h6>&nbsp;</h6> <h6>&nbsp;</h6> <h6>Sample Input</h6> 110 / 100 99 % 10 2147483647 / 2147483647 2147483646 % 2147483647 </td> 
 <td colspan="2"> &nbsp; &nbsp; &nbsp; &nbsp; </td> 
 </tr> 
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 <td> <h6>&nbsp;</h6> <h6>&nbsp;</h6> <h6>Sample Output</h6> 1 9 1 2147483646 </td> 
 <td colspan="2"> &nbsp; </td> 
 </tr> 
 </tbody> 
</table>

第一次用java写，曾经从来没看过，今天看了一点主要的输入输出切了一道A+B后，直接来一道高精度的。1A![得意][proud.gif]，没有编译器，直接敲完就交，谁给我的勇气？。。。

待会写一篇总结java里面的高精度大数的使用方法

import java.io.*;
    
    import java.util.*;
    
    import java.math.*;
    import java.text.*;
    public class Main {
    
    		public static void main(String args[]) {
    
    		       Scanner in = new Scanner(System.in);
    
                           BigInteger a,b;char c;
                           while(in.hasNext()){
    		       a = in.nextBigInteger();
    
                           c=in.next().charAt(0);
    		       b = in.nextBigInteger();
    
    
    		       if(c=='/')
                           System.out.println(a.divide(b));
                           else
                            System.out.println(a.mod(b));
                           
                          }
    		
                   }
    
    }

[proud.gif]: /images/20220331/647271d116254835a25e0d9a60837fae.png