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 Perl (5.26.1) (judge verdict: Accepted)

#!/usr/bin/perl

# 引数取り込み
my $a = <>;
my $b = substr( $a, 0, 1 );
my $c = substr( $a, 1, 1 );
my $d = substr( $a, 2, 1 );

# 処理開始
if ( $b == 7 or $c == 7 or $d == 7 ) {
    print "Yes";
}
else {
    print "No";
}

1;