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 Scala (2.13.1) (judge verdict: Accepted)

import scala.io.StdIn._
import scala.math._

object Main extends App with StdInHelper {
  val n = readLine()

  println(if (n.contains("7")) "Yes" else "No")
}

trait StdInHelper {
  def readInts = readLine.split(" ").map(_.toInt)
  def readLongs = readLine.split(" ").map(_.toLong)
}