Equal numbers

Statement

Given three integers. Determine how many of them are equal to each other. The program must print one of the numbers: 3 (if all are the same), 2 (if two of them are equal to each other and the third one is different) or 0 (if all numbers are different).

Example input 1 

10
5
10

Example output 1

2

Example input 2

5
5
5

Example output 2

3



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