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2 0.400000
3 0.600000
4 0.800000
5 0.040000
6 0.240000
7 0.440000
8 0.640000
9 0.840000
10 0.080000
11 0.280000
12 0.480000
13 0.680000
14 0.880000
15 0.120000
16 0.320000
17 0.520000
18 0.720000
19 0.920000
20 0.160000