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Discussion of Problem 2155. Quadrocopter

Tests helped me with WA4
Posted by Zergatul 10 Feb 2021 18:28
2 2
2 2
1 1
6 7
1 7
D U
R U
---
1

3 3
2 3
2 1
2 1 7
1 9 8
7 5 4
L D U
R U R
L L U
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8