Home

Problem Statement

You are given a $4$-digit PIN: $X_1X_2X_3X_4$, which may begin with a $0$. 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 $i$ such that $1\leq i\leq 3$, $X_{i+1}$ follows $X_i$. Here, $j+1$ follows $j$ for each $0\leq j\leq 8$, and $0$ follows $9$.

If the given PIN is weak, print Weak; otherwise, print Strong.

Constraints

• $0 \leq X_1, X_2, X_3, X_4 \leq 9$
• $X_1$, $X_2$, $X_3$, and $X_4$ are integers.

Sample Input 1

7777

Sample Output 1

Weak

All four digits are $7$, satisfying the first condition, so this PIN is weak.

Sample Input 2

0112

Sample Output 2

Strong

The first and second digits differ, and the third digit does not follow the second digit, so neither condition is satisfied.

Sample Input 3

9012

Sample Output 3

Weak

Note that $0$ follows $9$.