位数问题
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Description
在所有的N位数中，有多少个数中有偶数个数字3?由于结果可能很大，你只需要输出这个答案对12345取余的值。
Input Format
读入一个数N。
Output Format
输出有多少个数中有偶数个数字3。
2
73
2026-4-26递推练习
- Status
- Done
- Rule
- XCPC
- Problem
- 9
- Start at
- 2026-4-26 13:30
- End at
- 2026-4-26 16:30
- Duration
- 3 hour(s)
- Host
-
admin
- Partic.
- 8