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 (Clang 10.0.0) (judge verdict: Accepted)

#include <stdio.h>

int main(void) {
    char N[4];
    scanf("%s", N);

    int i = 0;
    for (i = 0; i < 3; i++) {
        if (N[i] == '7') {
            printf("Yes\n");
            return 0;
        }
    }
    printf("No\n");
    return 0;
}