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 9.2.1) (judge verdict: Accepted)



#include<bits/stdc++.h>
#define ll long long

using namespace std;
int main()
{




    long long ai,t,n,a,A,sum=0,b,B,c=0,k,e,f,g;



    cin >> a ;

    while( a != 0)
    {
        b=a%10;

        if(b == 7)
        {
            cout << "Yes";
            return 0;
        }

        a=a/10;


    }
    cout << "No";






return 0;
}