数数游戏 - Problem - CGOJ

Problem J: 数数游戏

Problem J: 数数游戏

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Time Limit : 1.000 sec Memory Limit : 128 MiB

Submit ProblemList Solved: 35 Submit Num: 71 Statistics ShowOff!

Description

从1数到n，一共数了多少个包含数字“3”的个数？

Output

Sample Input Copy

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