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25 lines
598 B
25 lines
598 B
#!/usr/bin/python3
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# https://www.hackerrank.com/challenges/sherlock-and-the-beast
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import sys
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def largest_decent_number(num_digits):
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if num_digits in [1,2,4,7]:
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return '-1'
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quot3, mod3 = divmod(num_digits, 3)
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if mod3 == 0:
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return '555' * quot3
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elif mod3 == 1:
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return '555' * (quot3 - 3) + '3333333333'
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elif mod3 == 2:
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return '555' * (quot3 - 1) + '33333'
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def main():
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num_tests = int(sys.stdin.readline())
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for _ in range(num_tests):
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print(largest_decent_number(int(sys.stdin.readline())))
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if __name__ == '__main__':
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main()
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