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: Wrong Answer)

function main(x) {
    if (x >99 || x <1000) {
        let _n = [];
let n = x.toString();
        _n[0] = n.charAt(0);
        _n[1] = n.charAt(1);
        _n[2] = n.charAt(2);
        const a = _n.filter(_a => _a === '7');
        if(a.length < 1){
            return 'No';
        } else {
            return 'Yes';
        }
    }
}
main(require("fs").readFileSync("/dev/stdin", "utf8"));