I have been at this for hours, and I can't find out why it's giving me WA!
I checked with other accepted answers and the basic logic is the same.
What's could the problem be?
```python3
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sat Feb 15 09:34:13 2020
@author: shreya
"""
T = int(input())
for t in range(1, T+1):
R, C, K = map(int, input().split())
openDoors = []
if K == (R*C)-1:
print("Case #{}: IMPOSSIBLE".format(t))
continue
if C == 1:
openDoors = ['N']*K + ['S'] + ['N']*(R-K-1)
print("Case #{}: POSSIBLE\n{}".format(t, '\n'.join(openDoors)))
continue
openRow = ['N']*C
closedRow = ['E'] + ['W']*(C-1)
openDoors = [openRow]*(K//C)
if not K%C: # divisible
openDoors.extend([closedRow]*(R-(K//C)))
else:
row = ['N']*(K%C) + ['E'] + ['W']*(C-(K%C)-1)
if C-(K%C)-1 == 0:
row[-1] = 'S'
openDoors.append(row)
openDoors.extend([closedRow]*(R-(K//C)-1))
for i in range(0, R):
openDoors[i] = ''.join(openDoors[i])
print("Case #{}: POSSIBLE\n{}".format(t, '\n'.join(openDoors)))
```
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