31 lines
498 B
Python
31 lines
498 B
Python
N = int(input())
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length = [int(input()) for i in range(N)]
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# N <= 8 * 10**4, length <= 10**9
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# method 1, has some time exceeded
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"""
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sum = 0
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for i in range(N):
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for j in range(i+1,N):
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if length[i] > length[j]:
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sum += 1
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elif length[i] <= length[j]:
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break
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"""
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# method 2
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sum = 0
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i = 0
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while i < N:
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for j in range(i + 1, N):
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if length[i] > length[j]:
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sum += 1
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elif length[i] <= length[j]:
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# maybe something here?
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break
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print(sum)
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