13 lines
252 B
Python
13 lines
252 B
Python
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# Accepted #
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n = int(input())
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discos = [tuple(map(int, input().split())) for _ in range(n)]
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discos.sort(key=lambda x:(-x[1],x[0]))
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discount = 0
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balance = 0
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for price, nxt in discos:
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balance -= price - discount
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discount += nxt
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print(-balance)
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