Contest Duration: - (local time) (100 minutes) Back to Home
A - box /

Time Limit: 2 sec / Memory Limit: 1024 MB

### 問題文

N 個のボールが入っていた箱から A 個のボールを取り出し、新たに B 個のボールを入れました。今、箱にはボールが何個入っていますか?

### 制約

• 入力はすべて整数
• 100 \leq N \leq 200
• 1 \leq A,B \leq 100

### 入力

N A B


### 入力例 1

100 1 2


### 出力例 1

101


### 入力例 2

100 2 1


### 出力例 2

99


### 入力例 3

100 1 1


### 出力例 3

100


Score : 100 points

### Problem Statement

We have removed A balls from a box that contained N balls and then put B new balls into that box. How many balls does the box contain now?

### Constraints

• All values in input are integers.
• 100 \leq N \leq 200
• 1 \leq A,B \leq 100

### Input

Input is given from Standard Input in the following format:

N A B


### Output

Print the answer as an integer.

### Sample Input 1

100 1 2


### Sample Output 1

101


The box contained 100 balls. After removing 1 ball and putting 2 new balls, it now contains 101 balls.

### Sample Input 2

100 2 1


### Sample Output 2

99


### Sample Input 3

100 1 1


### Sample Output 3

100