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)

'use strict';
function main(input) {
  input = input.split("\n");
  const a = input[0];

  if (a.match(/7/)) {
    console.log('Yes');
  } else {
    console.log('No');
  }
}

main(require("fs").readFileSync("/dev/stdin", "utf8"));