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 PHP (7.4.4) (judge verdict: Accepted)

<?php

    fscanf(STDIN,"%s",$N);
        $count=0;
   
    for($i=0;$i<3;$i++){
        if($N[$i]=='7'){
            $count++;
        }
    }

    if($count>0){
        echo "Yes\n";
    }else{
        echo "No\n";
    }