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

Time Limit: 2 sec / Memory Limit: 1024 MB

### 制約

• 0 \leq A, B, C, D, E \leq 100
• 入力はすべて整数

### 入力

A B C D E


### 入力例 1

31 9 24 31 24


### 出力例 1

3


### 入力例 2

0 0 0 0 0


### 出力例 2

1


Score : 100 points

### Problem Statement

Print how many distinct integers there are in given five integers A, B, C, D, and E.

### Constraints

• 0 \leq A, B, C, D, E \leq 100
• All values in input are integers.

### Input

Input is given from Standard Input in the following format:

A B C D E


### Sample Input 1

31 9 24 31 24


### Sample Output 1

3


In the given five integers 31, 9, 24, 31, and 24, there are three distinct integers 9, 24, and 31. Thus, 3 should be printed.

### Sample Input 2

0 0 0 0 0


### Sample Output 2

1