#18218. 【基础题】子序列的和（subsequence）
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ID: 18218
Type: Default
1000ms
128MiB
Tried: 0
Accepted: 0
Difficulty: (None)
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【基础题】子序列的和（subsequence）
说明
输入两个正整数n < m < 10^6，输出
2 4
65536 655360
0 0Case 1: 0.42361
Case 2: 0.00001