Codeforces Round 660 (Div. 2)
B
Captain Flint and a Long Voyage
Codeforces
1000
原题
← AC →
翻译中…

Captain Flint and his crew keep heading to a savage shore of Byteland for several months already, drinking rum and telling stories. In such moments uncle Bogdan often remembers his nephew Denis. Today, he has told a story about how Denis helped him to come up with an interesting problem and asked the crew to solve it.

翻译中…

In the beginning, uncle Bogdan wrote on a board a positive integer $x$ consisting of $n$ digits. After that, he wiped out $x$ and wrote integer $k$ instead, which was the concatenation of binary representations of digits $x$ consists of (without leading zeroes). For example, let $x = 729$, then $k = 111101001$ (since $7 = 111$, $2 = 10$, $9 = 1001$).

翻译中…

After some time, uncle Bogdan understood that he doesn't know what to do with $k$ and asked Denis to help. Denis decided to wipe last $n$ digits of $k$ and named the new number as $r$.

翻译中…

As a result, Denis proposed to find such integer $x$ of length $n$ that $r$ (as number) is maximum possible. If there are multiple valid $x$ then Denis is interested in the minimum one.

翻译中…

All crew members, including captain Flint himself, easily solved the task. All, except cabin boy Kostya, who was too drunk to think straight. But what about you?

翻译中…

Note: in this task, we compare integers ($x$ or $k$) as numbers (despite what representations they are written in), so $729 \lt 1999$ or $111 \lt 1000$.

翻译中…

Input

翻译中…

The first line contains a single integer $t$ ($1 \le t \le 1000$) — the number of test cases.

翻译中…

Next $t$ lines contain test cases — one per test case. The one and only line of each test case contains the single integer $n$ ($1 \le n \le 10^5$) — the length of the integer $x$ you need to find.

翻译中…

It's guaranteed that the sum of $n$ from all test cases doesn't exceed $2 \cdot 10^5$.

翻译中…

Output

翻译中…

For each test case, print the minimum integer $x$ of length $n$ such that obtained by Denis number $r$ is maximum possible.

翻译中…

Note

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In the second test case (with $n = 3$), if uncle Bogdan had $x = 998$ then $k = 100110011000$. Denis (by wiping last $n = 3$ digits) will obtain $r = 100110011$.

翻译中…

It can be proved that the $100110011$ is the maximum possible $r$ Denis can obtain and $998$ is the minimum $x$ to obtain it.

翻译中…

样例

Input #1
2
1
3
Output #1
8
998
InputCopy OutputCopy
题目信息
题号
1388B
时间限制
2 s
内存限制
256 MB
标签
贪心
数学

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