Type: Default 1000ms 128MiB

练11.3 等差数列末项计算

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说明

给出一个等差数列的前两项a1a_1a2a_2,求第nn项是多少。

输入格式

一行,包含三个整数a1a_1a2a_2nn100a1−100≤a_1,a2100a_2≤1000<n10000< n ≤ 1000

输出格式

一个整数,即第nn项的值。

样例

1 4 100
298

20230417 周一作业

Not Claimed
Status
Done
Problem
20
Open Since
2023-4-17 0:00
Deadline
2023-4-25 23:59
Extension
24 hour(s)