Sum of squares of even numbers

Rust Easy iterators

Task «Sum of squares of even numbers»

Write a Rust program that reads a sequence of integers separated by spaces and uses iterators to find the sum of squares of all even numbers. If there are no even numbers, output 0.

Input Format

One line containing integers separated by spaces.

Output Format

One integer — the sum of squares of even numbers.

Examples

Example 1

INPUT

1 2 3 4

OUTPUT

20

Example 2

INPUT

2 4 6

OUTPUT

56

main.rs