You enter a sequence of numbers until you enter two equal numbers in a row. Count the number of numbers in the sequence.
Input
The input is numbers on the same line, separated by a single space. The input ends with two identical digits in a row.
Output
Print the number of numbers, counting the last two numbers.
Examples
| # |
Input |
Output |
| 1 |
3 5 24 4 3 5 3 5 3 5 5 |
11 |