Score : 100 points
The door of Snuke's laboratory is locked with a security code.
The security code is a 4-digit number. We say the security code is hard to enter when it contains two consecutive digits that are the same.
You are given the current security code S. If S is hard to enter, print Bad
; otherwise, print Good
.
Input is given from Standard Input in the following format:
S
If S is hard to enter, print Bad
; otherwise, print Good
.
3776
Bad
The second and third digits are the same, so 3776 is hard to enter.
8080
Good
There are no two consecutive digits that are the same, so 8080 is not hard to enter.
1333
Bad
0024
Bad