# The first digit of the number

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

Find the first digit of an integer. Start count digits from the leftmost one.

## Input

One 64-bit integer containing at least one digits. The number can be negative.

## Output

Print the first digit of a given integer.

## Examples

Input #1

Answer #1

Input #2

Answer #2

Submissions 33K

Acceptance rate 50%