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 C (GCC 5.4.1) (judge verdict: Accepted)

#include<stdio.h>

main()
{
    int n,flag=0,res;
    scanf("%d",&n);

    while(n!=0)
    {
        res = n%10;
        n/=10;
        if(res==7)
        {
            flag=1;
            break;
        }
    }
    if(flag)
        printf("Yes");
    else
        printf("No");
}