2
45
20
10
white
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]                                           [
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]     _________________________             [
]    /                   ~~~   \            [
]   |     ~~~                   |           [
]   |               ~~~         |         \ [
]   | ~~~                  ~~~  |          \=
]   |         ~~~               |            
]    \_________________________/             
]                                            
]                                            
]                                          /=
]   ____________                  _       / [
]  /            \                / \        [
] |  ~~          |            _ | O | _     [
] |          ~~  |           / \ \_/ / \    [
]  \____~~______/           | O |   | O |   [
]                            \_/     \_/    [
+===================|   |===================+
+===================|   |===================+
]                                           [
]                                           [
]     _________________________             [
]    /  ~~~                    \            [
]   |        ~~~                |           [
]   |                  ~~~      |         \ [
]   |    ~~~        ~~~         |          \=
]   |                      ~~~  |            
]    \_______~~~_______________/             
]                                            
]                                            
]                                          /=
]   ____________                  _       / [
]  /     ~~     \                / \        [
] |         ~~   |            _ | O | _     [
] |  ~~          |           / \ \_/ / \    [
]  \____________/           | O |   | O |   [
]                            \_/     \_/    [
+===================|   |===================+