Morris' Blog 我在摸索我存在的意義、生命的意義、內涵及價值。 沒有真正神手般的厲害，套用模式是大部分的情況。 沒那麼厲害的我存在的意義為何，襯托出神的存在？ 有時候不能怪別人不給我機會，我已經開始省思， 為什麼我沒有給別人機會的原因，而是全要靠別人。 有時候我認為我與眾不同，那是因為我做不到很多人能辦到的事情。 我聽不到、玩不起來、說得不夠明瞭、理解得不夠多， 我缺少的語文能力，就是一切一切無能的判定。 為此，我不曉得能做些對別人有幫助的事情。 我知道我自己是個不服輸的性格，但現在我不得不認輸。 我沒有能力，因此我必須認輸。 我到底來這世界作什麼？處處充滿不確定性， 而我總是無法出類拔萃，想當個一般人似乎也回不了頭了。 越強大的挑戰需要越強力的支持，而我的支持是什麼？ 最近嘗試與人談話，但都是失敗的結局，沒人能接受， 不需要言語，不需要溝通，一切所想都表達不出來。

49愛的鼓勵 6訂閱站台

Return of the Aztecs

Problem B:	Big Big Real Numbers
Time Limit: 1 second Memory Limit: 32 MB

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Aztec warriors are very good at math (Sssh! It’s a secret information :). As an Aztec, little Ahuitzotl has his heart’s wish to be a great warrior. But he is not good at math. There is a tradition in Aztecs that foundation of being very good at math is to know how to add really big decimal point numbers. With this wish in his heart, little Ahuitzotl started to practice adding such big real numbers. He wants your help to become very good at math. He wants you to write a program for him so that when he adds two decimal numbers he can match his results with your programs output. You see, you have such a big responsibility (to help a kid being a great warrior :)

Input

First line of the input is a non negative integer N. Next N line follows a pair of real numbers separated by a space in each line. Negative real number can appear in the input. Length of each number can be 1000 digits both before and after decimal point. The Input ends at EOF. You can assume that no invalid number will be given as input.

Output

You have to print the result after adding every pair of numbers in different lines. There should be at least one digit after and before the decimal point and no trailing and leading zeros should be printed.

Sample Input

8
1111.332 1123.1112
.223 9.8963
0.002331 .0012
1111.20000 1.0000
004112.000 21.00
.123 .001
3.333 -1.111
-1.111 3.333

Sample Output

2234.4432
10.1193
0.003531
1112.2
4133.0
0.124
2.222
2.222

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輸出比較麻煩點, 如果你有更好的 method 請告訴我

import java.math.BigDecimal;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {     
        Scanner cin = new Scanner(System.in);
        int t = cin.nextInt();
        while(cin.hasNext()) {
        	BigDecimal a, b;
        	a = new BigDecimal(cin.next());
        	b = new BigDecimal(cin.next());
        	String ans = a.add(b).toPlainString();
        	boolean flag = false;
        	int i, j;
        	for(i = 0; i < ans.length(); i++) {
        		if(ans.charAt(i) != '.')
        			System.out.print(ans.charAt(i));
        		else {
        			flag = true;
        			break;
        		}
        	}
        	if(flag == false)
        		System.out.println(".0");
        	else {
        		j = ans.length()-1;
        		while(ans.charAt(j) == '0')	j--;
        		if(ans.charAt(j) == '.')
        			System.out.println(".0");
        		else {
        			for(; i <= j; i++)
        				System.out.print(ans.charAt(i));
        			System.out.println("");
        		}
        	}
        }
    }
}