各位数字总和
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说明
已知N个(N<=32767)自然数(1,2,...,N)的各位数字的总和数不超过M
输入格式
共一行：整数M
输出格式
最大的N值
样例
459
You cannot submit for this problem because the contest is ended. You can click "Open in Problem Set" to view this problem in normal mode.
已知N个(N<=32767)自然数(1,2,...,N)的各位数字的总和数不超过M
共一行：整数M
最大的N值
459