CF1295A.Display The Number

You have a large electronic screen which can display up to $998244353$ decimal digits. The digits are displayed in the same way as on different electronic alarm clocks: each place for a digit consists of $7$ segments which can be turned on and off to compose different digits. The following picture describes how you can display all $10$ decimal digits:

As you can see, different digits may require different number of segments to be turned on. For example, if you want to display $1$, you have to turn on $2$ segments of the screen, and if you want to display $8$, all $7$ segments of some place to display a digit should be turned on.

You want to display a really large integer on the screen. Unfortunately, the screen is bugged: no more than $n$ segments can be turned on simultaneously. So now you wonder what is the greatest integer that can be displayed by turning on no more than $n$ segments.

Your program should be able to process $t$ different test cases.

你有一块大型电子显示屏，最多可显示 $998244353$ 位十进制数字。这些数字的显示方式与各类电子闹钟相同：每个数位由 $7$ 个可独立开启或关闭的线段组成，通过不同线段的组合来表示不同的数字。下图描述了全部 $10$ 个十进制数字的显示方式：

如图所示，不同数字所需的点亮线段数量可能不同。例如，要显示数字 $1$，需点亮 $2$ 个线段；而要显示数字 $8$，则需点亮某个数位上的全部 $7$ 个线段。

你想在该屏幕上显示一个非常大的整数。但不幸的是，屏幕存在故障：任意时刻点亮的线段总数不能超过 $n$ 个。因此，你现在想知道：在点亮线段总数不超过 $n$ 的前提下，所能显示的最大整数是多少？

你的程序需要能够处理 $t$ 组不同的测试用例。

The first line contains one integer $t$ ($1 \le t \le 100$) — the number of test cases in the input.

Then the test cases follow, each of them is represented by a separate line containing one integer $n$ ($2 \le n \le 10^5$) — the maximum number of segments that can be turned on in the corresponding testcase.

It is guaranteed that the sum of $n$ over all test cases in the input does not exceed $10^5$.

第一行包含一个整数 $t$（$1 \le t \le 100$）—— 输入中测试用例的数量。

接下来是各测试用例，每个测试用例由一行单独的整数 $n$（$2 \le n \le 10^5$）表示—— 即对应测试用例中最多可点亮的线段数量。

保证输入中所有测试用例的 $n$ 值之和不超过 $10^5$。

For each test case, print the greatest integer that can be displayed by turning on no more than $n$ segments of the screen. Note that the answer may not fit in the standard $32$-bit or $64$-bit integral data type.

对于每个测试用例，输出通过点亮屏幕上至多 $n$ 个线段所能显示的最大整数。注意：答案可能无法放入标准的 $32$ 位或 $64$ 位整型数据类型中。