Lucky number and a sum
Submissions: 532   Accuracy:

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  Difficulty: Basic   Marks: 1

Lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. Print the minimum lucky number which has the sum of digits equal to N.

Input:
The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case contains an integer N.

Output:
For each test case, Print the minimum lucky number. If there is no such lucky number print "-1".

Constraints:
1<=T<=300
1<=N<=105

Example:
Input:
2
11
10

Output:
47
-1

** For More Input/Output Examples Use 'Expected Output' option **

Contributor: Arun Tyagi
Author: arun03


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