CF1857B.Maximum Rounding
普及/提高-
通过率:0%
AC君温馨提醒
该题目为【codeforces】题库的题目,您提交的代码将被提交至codeforces进行远程评测,并由ACGO抓取测评结果后进行展示。由于远程测评的测评机由其他平台提供,我们无法保证该服务的稳定性,若提交后无反应,请等待一段时间后再进行重试。
题目描述
Given a natural number x . You can perform the following operation:
- choose a positive integer k and round x to the k -th digit
Note that the positions are numbered from right to left, starting from zero. If the number has k digits, it is considered that the digit at the k -th position is equal to 0 .
The rounding is done as follows:
- if the digit at the (k−1) -th position is greater than or equal to 5 , then the digit at the k -th position is increased by 1 , otherwise the digit at the k -th position remains unchanged (mathematical rounding is used).
- if before the operations the digit at the k -th position was 9 , and it should be increased by 1 , then we search for the least position k′ ( k′>k ), where the digit at the k′ -th position is less than 9 and add 1 to the digit at the k′ -th position. Then we assign k=k′ .
- after that, all digits which positions are less than k are replaced with zeros.
Your task is to make x as large as possible, if you can perform the operation as many times as you want.
For example, if x is equal to 3451 , then if you choose consecutively:
- k=1 , then after the operation x will become 3450
- k=2 , then after the operation x will become 3500
- k=3 , then after the operation x will become 4000
- k=4 , then after the operation x will become 0
To maximize the answer, you need to choose k=2 first, and then k=3 , then the number will become 4000 .
输入格式
The first line contains a single integer t ( 1≤t≤104 ) — the number of test cases.
Each test case consists of positive integer x with a length of up to 2⋅105 . It is guaranteed that there are no leading zeros in the integer.
It is guaranteed that the sum of the lengths of all integers x over all test cases does not exceed 2⋅105 .
输出格式
For each set of input data, output the maximum possible value of x after the operations. The number should not have leading zeros in its representation.
输入输出样例
输入#1
10 1 5 99 913 1980 20444 20445 60947 419860 40862016542130810467
输出#1
1 10 100 1000 2000 20444 21000 100000 420000 41000000000000000000
说明/提示
In the first sample, it is better not to perform any operations.
In the second sample, you can perform one operation and obtain 10 .
In the third sample, you can choose k=1 or k=2 . In both cases the answer will be 100 .