Problems
The first digit of the number
The first digit of the number
Find the first digit of an integer. Start count digits from the leftmost one.
Input data
One 64-bit integer containing at least one digits. The number can be negative.
Output data
Print the first digit of a given integer.
Examples
Input example #1
1234567890123
Output example #1
1
Input example #2
-7654321
Output example #2
7