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 Julia (1.4.0) (judge verdict: Wrong Answer)

x = parse(Int, readline())

function mygcd(a,b,c)
    if(a==b && b==c)
        return a
    end
    max = div(maximum((a,b,c)),2)
    GCD = 0
    for i in [i for i = 1:max]
        if(a%i==0 && b%i==0 && c%i==0)
            GCD = i
        end
    end
    return GCD
end

function mysum(K)
    S = 0
    for a in [i for i = 1:K]
        for b in [i for i = 1:K]
            for c in [i for i = 1:K]
                S = S + gcd(a,b,c)
            end
        end
    end
    return S
end
println(mysum(x))