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4677: B3756 [信息与未来 2021] 幸运数字
Memory Limit:128 MB
Time Limit:1.000 S
Judge Style:Text Compare
Creator:
Submit:35
Solved:27
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Description
Input
Output
Sample Input
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100 1000
Sample Output
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203
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https://www.luogu.com.cn/problem/B3756
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