Div. 7

题意翻译

给定 $t$ 组数据。 每组数据给定一个数 $n$（$10\le n\le 999$）。 每次操作可以修改 $n$ 任意一位上的数，将这一位上的数修改为 $0\sim 9$ 之间的任意数。要求使用最少的修改次数使这个数修改后是 $7$ 的倍数，并且没有多余的前导 $0$。输出修改后的数，如果有多组解，输出任意一种即可。如果已经是 $7$ 的倍数，那么不需要修改。

题目描述

You are given an integer $ n $ . You have to change the minimum number of digits in it in such a way that the resulting number does not have any leading zeroes and is divisible by $ 7 $ . If there are multiple ways to do it, print any of them. If the given number is already divisible by $ 7 $ , leave it unchanged.

输入输出格式

输入格式

The first line contains one integer $ t $ ( $ 1 \le t \le 990 $ ) — the number of test cases. Then the test cases follow, each test case consists of one line containing one integer $ n $ ( $ 10 \le n \le 999 $ ).

输出格式

For each test case, print one integer without any leading zeroes — the result of your changes (i. e. the integer that is divisible by $ 7 $ and can be obtained by changing the minimum possible number of digits in $ n $ ). If there are multiple ways to apply changes, print any resulting number. If the given number is already divisible by $ 7 $ , just print it.

输入输出样例

输入样例 #1

3
42
23
377

输出样例 #1

42
28
777

说明

In the first test case of the example, $ 42 $ is already divisible by $ 7 $ , so there's no need to change it. In the second test case of the example, there are multiple answers — $ 28 $ , $ 21 $ or $ 63 $ . In the third test case of the example, other possible answers are $ 357 $ , $ 371 $ and $ 378 $ . Note that you cannot print $ 077 $ or $ 77 $ .