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)

var input = process.argv[1];
var result = 0;
for (var a = 1; a <= input; a++) {
  for (var b = 1; b <= input; b++) {
    for (var c = 1; c <= input; c++) {
      // console.log(a + " " + b + " " + c);
      result += gcd(gcd(a, b), c);
    }
  }
}
console.log(result);

function gcd(a, b) {  
  if (b == 0) {
    return a;
  }
  return gcd(b, a%b);
}