100750: [AtCoder]ABC075 A - One out of Three

Memory Limit:256 MB Time Limit:2 S
Judge Style:Text Compare Creator:
Submit:0 Solved:0

Description

Score : $100$ points

Problem Statement

You are given three integers, $A$, $B$ and $C$.
Among them, two are the same, but the remaining one is different from the rest.
For example, when $A=5,B=7,C=5$, $A$ and $C$ are the same, but $B$ is different.
Find the one that is different from the rest among the given three integers.

Constraints

  • $-100 \leq A,B,C \leq 100$
  • $A$, $B$ and $C$ are integers.
  • The input satisfies the condition in the statement.

Input

Input is given from Standard Input in the following format:

$A$ $B$ $C$

Output

Among $A$, $B$ and $C$, print the integer that is different from the rest.


Sample Input 1

5 7 5

Sample Output 1

7

This is the same case as the one in the statement.


Sample Input 2

1 1 7

Sample Output 2

7

In this case, $C$ is the one we seek.


Sample Input 3

-100 100 100

Sample Output 3

-100

Input

题意翻译

### 题目描述 读入三个数a,b,c,求只出现一次的数是哪个。 ### 输入格式 一行,三个整数a,b,c。 ### 输出格式 一行,表示只出现过一次的数 ### **输入样例1** ``` 5 7 5 ``` ### **输出样例1** ``` 5 ``` ### **输入样例2** ``` 1 1 7 ``` ### **输出样例2** ``` 7 ``` ### **输入样例3** ``` -100 100 100 ``` ### **输出样例3** ``` -100 ```

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