# Sum of squares of digits

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

Four-digit positive integer is given. Find the sum of squares of its digits.

## Input

One four-digit positive integer n (1000 ≤ n ≤ 9999).

## Output

Print the sum of squares of digits of number n.

## Examples

Input #1

Answer #1

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