Count how many words have even length.

Difficulty: Easy

Phase: 5 · Strings

XP Reward: 10 XP

Topics: Strings, Easy

Supported Languages: Python, JavaScript, C, C++, Java

Problem Description

Given a sentence, count how many words have an even number of characters. Input Format: Read input from standard input (stdin). Output Format: Print the result to standard output (stdout).

Constraints

-10^9 <= N <= 10^9

Examples

Example 1

Input: This is a great day

Output: 3

Explanation: Sample execution for input This is a great day