Count how many words contain the letter 'a'.

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 contain the letter 'a' (case-insensitive). 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: An apple a day keeps the doctor away

Output: 5

Explanation: Sample execution for input An apple a day keeps the doctor away