10 lines
212 B
Python
10 lines
212 B
Python
blocks_available = int(input())
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total_blocks_needed = 0
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i = 0
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while True:
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i += 1
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total_blocks_needed += (i * 2 - 1) ** 2
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if total_blocks_needed > blocks_available:
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print(i - 1)
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exit()
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