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# (.NET Core 3.1.201) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;

class Program {
    static void Main (string[] args) {
        var inp = Console.ReadLine().Split(' ');

        int n = int.Parse(inp[0]);

        if((n % 100) % 10 == 7) {
            Console.WriteLine("Yes");
            return;
        }

        if((n / 10) % 10 == 7) {
            Console.WriteLine("Yes");
            return;
        }

        if(n / 100 == 7) {
            Console.WriteLine("Yes");
            return;
        }

        Console.WriteLine("No");

    }
}