Traffic Signal

Source: Phước Hưng OJ

Version: Phuoc Hung OJ Extended

Problem Statement

A traffic-light controller receives integer code k. Code 0 means stop, 1 means ready and 2 means go. All other codes indicate an error.

Input

One integer k, the signal code.

Output

Print STOP for 0, READY for 1, GO for 2, or ERROR for any other value.

Subtasks

• Subtask 1 (20%): 0 <= k <= 2.
• Subtask 2 (30%): -10 <= k <= 10.
• Subtask 3 (50%): -1000 <= k <= 1000.

Examples

Example 1

Input

1

Output

READY

Explanation

Code 1 is the ready signal.

Example 2

Input

3

Output

ERROR

Explanation

Code 3 is not recognized.