2 4
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5 0.5
0 1
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1 1
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0 1
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3 1
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12 1
-1 1
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2 4
3 1
-1 1
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5 0.5
0 1
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2 1
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1 1
-3 0.5
0 1
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3 1
-1 1
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7 1
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0 2
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1 1
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-1 1
8 1
0 0.5
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10 1
0 0.5
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7 1
0 0.5
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1 1
2 0.5
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8 1
0 0.5
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-2 1
