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<stdio.h>

int main() {
	int N;
	int x = scanf("%d", &N);
	while (N) {
		if (N%10 == 7) {
			printf("Yes\n");
			return 0;
		}
		
		N /= 10;
	}

	printf("No\n");
	return 0;
}