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In this 3x3 two-dimensional grid map, how many obstacles exist? And how many combinations of maps can be formed?

1 0 1
0 1 0
1 0 1

Obstacles= 1, Combinations= 32

Obstacles= 2, Combinations= 62

Obstacles= 3, Combinations= 128

Obstacles= 4, Combinations= 256

Obstacles= 5, Combinations= 512

SOLUTION:

**Obstacles=** 5, **Combinations=** 512