A8806. Adding Digits
编程题
普及/提高-
知识点
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
524848
输入 #2
12 11 1
输出 #2
121
输入 #3
260 150 10
输出 #3
-1