_. 庆功宴

    Type: Default 1000ms 256MiB

庆功宴

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Background

人类被k激光打的落花流水,并举旗投降。土拨鼠军队胜利凯旋。在庆功宴上,土拨鼠们玩起了"真逢7必过"。

Description

游戏规则:从1开始报数,如果自己将报的数,数字各位都不是7,直接报数字。反之,就说"过";"过"也算一个数字,后面的人继续报,因此就会出现好多人连续报"过"的情况。举个例子,从1报到17:1,2,3,4,5,6,过,8,9,10,11,12,13,14,15,16,过。土拨鼠们从1报到了n,他们想知道,在游戏过程中,大家到底说了多少个"过"。由于答案可能很大,你只需输出他对10007取模的结果。

Format

Input

一个数,n

Output

answer

Samples

17
2
100
19
1716
421

Limitation

0n106660 \leq n \leq 10^{666}

非常好看

Not Attended
Status
Done
Rule
Ledo
Problem
40
Start at
2025-1-24 16:45
End at
2025-4-18 0:45
Duration
2000 hour(s)
Host
Partic.
17