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题库练习 Adding Digits

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A8806 | $Adding Digits$

时间限制1s

内存限制256MB

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题目描述

The first line contains three integers: $a,b,n\ (1<=a,b,n<=10^{5})$ .

输入格式

In a single line print the integer without leading zeros, which Vasya can get when he applies the lengthening operations to number $a\ n$ times. If no such number exists, then print number -1. If there are multiple possible answers, print any of them.

输出格式

无

输入输出样例

输入 #1

5 4 5

输出 #1

输入 #2

12 11 1

输出 #2

输入 #3

260 150 10

输出 #3

-1

C++ 编辑器

输入

输出