递推--过河卒 - Problem - 中科行知

Problem1082--递推--过河卒

1082: 递推--过河卒

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Time Limit : 1.000 sec Memory Limit : 128 MiB

Submit Solved: 6 Submit Num: 8 Statistics ShowOff!

Description

Sample Input Copy

4 8 2 4

Sample Output Copy

Source/Category

入门题-递推

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