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>
#include <ctype.h>
#include <string.h>


int main() {
	int N;
	scanf("%d", &N);
	int t;
	while (1) {
		if (N / 100 == 7) {
			printf("Yes");
			
			break;
		}
		else {
			t = N / 100;
			N = N - 100 * t;
		}
		if (N / 10 == 7) {
			printf("Yes");
			break;
		}
		else {
			t = N / 10;
			N = N - 10 * t;
		}
		if (N == 7) {
			printf("Yes");
			break;
		}
		else {
			printf("No");
			break;
		}
	}
	return 0;
}