#931. 求和
求和
题目描述
读入两个整数、。求
$$\red{a + aa + aaa + ..... + \underbrace{a.....a}_{n}} $$之和。
输入格式
二个数 ,
输出格式
输出一个数,表达式的和
样例
输入数据
2 3
输出数据
246
提示
数据规模:。
Related
In following contests:
In following homework:
读入两个整数a、n。求
$$\red{a + aa + aaa + ..... + \underbrace{a.....a}_{n}} $$之和。
二个数a ,n
输出一个数,表达式的和
2 3
246
数据规模:1<n<=10。
In following contests:
In following homework:
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