9 lines
275 B
Python
9 lines
275 B
Python
#!/usr/bin/env python3
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lines = (list(map(int, x.strip().split(','))) for x in open("input.txt"))
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for line in lines:
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line.sort()
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median = round(sum(line) / len(line))
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print(min(sum(abs(x - m)*(abs(x - m)+1)//2 for x in line) for m in range(median-1, median+2)))
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