Dozens of number
Problem
Clever Rabbit and his friends began to learn math. The first thing they learned is that all numbers are made up of numbers. Write a program that will help the Clever Rabbit identify the digits that represent dozens in a number.
Recall that tens are the penultimate digit of a number.
Input format
The natural number is inputed.
Output format
Output the answer to the problem.
Examples
| N |
Input |
Output |
| 1 |
2007 |
0 |
| 2 |
40 |
4 |