37 lines
643 B
Python
37 lines
643 B
Python
import sys
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N = int(input())
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S = [input() for i in range(N)]
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K = int(input())
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def change(s):
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return int(s, 36)
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def nofet(i):
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if i <= 9:
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return chr(i + 48)
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else:
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return chr(i + 55)
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def rechange(i):
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s = ""
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if i == 0:
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return "0"
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while i > 0:
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s += nofet(i % 36)
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i //= 36
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return s[::-1]
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mult = [[0, i] for i in range(36)]
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for s in S:
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for i, c in enumerate(s[::-1]):
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mult[change(c)][0] += 36 ** i
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mult.sort(key=lambda M: M[0] * (35 - M[1]))
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print(rechange(sum([mult[i][0] * mult[i][1] for i in range(36 - K)] + [mult[i][0] * 35 for i in range(36 - K, 36)])))
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