16 lines
278 B
Python
16 lines
278 B
Python
n = int(input())
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s = input().strip()
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dp = [0] * (n + 1)
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dp[0] = 1
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for i in range(1, n + 1):
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if s[i - 1] != '0':
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dp[i] += dp[i - 1]
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if i > 1:
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two_digit = int(s[i - 2:i])
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if 10 <= two_digit <= 26:
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dp[i] += dp[i - 2]
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print(dp[n]) |