2024-05-28 02:28:12 +01:00
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from math import lcm, ceil, log
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from random import choice, randint
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from os import system
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import io
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if __name__ == '__main__':
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while True:
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n = randint(1, 5)
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data = io.StringIO()
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print(1, file=data)
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print(n, file=data)
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for i in range(n - 1):
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print(f'{i + 1} {randint(i + 2, n)}', file=data)
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with open('std.in', 'w') as f:
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f.write(data.getvalue())
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system('./a.out < std.in > std.out')
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with open('std.out') as f:
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ans = f.read().strip().split(' ')
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if '0' in ans:
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break
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