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Problem1249--数列问题
1249: 数列问题
[Creator :
]
Time Limit :
1.000
sec
Memory Limit :
128 MB
Submit
Solved: 0
Submit Num: 1
Statistics
Description
已知一个数列的前3个数为3,4,5,以后每个数为前3个数的和,编程序求此数列的第N项
Input
输入N(N<=35)
Output
求出第N项的值
Sample Input
Copy
28
Sample Output
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25527448
Source/Category
集训六