Problem:
Score : 100 points

Problem Statement

Given is a three-digit integer N. Does N contain the digit 7?

If so, print Yes; otherwise, print No.

Constraints

100 \leq N \leq 999

Input

Input is given from Standard Input in the following format:

N

Output

If N contains the digit 7, print Yes; otherwise, print No.

Sample Input 1

117

Sample Output 1

Yes

117 contains 7 as its last digit.

Sample Input 2

123

Sample Output 2

No

123 does not contain the digit 7.

Sample Input 3

777

Sample Output 3

Yes

Solution in JavaScript (Node.js 12.16.1) (judge verdict: Accepted)

const Main = (input) => {
  const tmp = input.trim().toString().split('')

  const exist = tmp.indexOf('7')

  let result = ''
  if (exist === -1) {
    result = 'No'
  } else {
    result = 'Yes'
  }

  console.log(result)
  return result
}
Main(require('fs').readFileSync('/dev/stdin', 'utf8'))