5966: ABC212 —— B - Weak Password
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Description
You are given a 44-digit PIN: X1X2X3X4X1X2X3X4, which may begin with a 00. The PIN is said to be weak when it satisfies one of the following conditions:
- All of the four digits are the same.
- For each integer ii such that 1≤i≤31≤i≤3, Xi+1Xi+1 follows XiXi. Here, j+1j+1 follows jj for each 0≤j≤80≤j≤8, and 00 follows 99.
If the given PIN is weak, print Weak; otherwise, print Strong.
Input
Input is given from Standard Input in the following format:
$X_1X_2X_3X_4$
$X_1X_2X_3X_4$
Output
If the given PIN is weak, print Weak; otherwise, print Strong.
Constraints
$0≤X_1,\ X_2,\ X_3,\ X_4≤9$
$X_1,\ X_2,\ X_3,\ X_4$ are integers.
$X_1,\ X_2,\ X_3,\ X_4$ are integers.
Sample 1 Input
7777
Sample 1 Output
Weak
All four digits are $7$, satisfying the first condition, so this PIN is weak.
Sample 2 Input
0112
Sample 2 Output
Strong
The first and second digits differ, and the third digit does not follow the second digit, so neither condition is satisfied.
Sample 3 Input
9012
Sample 3 Output
Weak
Note that $0$ follows $9$.
HINT
题目来源：AtCoder ABC212 B题。