2019年10月29日
P4999 烦人的数学作业
摘要： 考虑统计出每一个数位的出现次数,然后乘i求和 DFS cpp include include include include include include include define int long long using namespace std ; const int ha = 1e9+7 阅读全文
posted @ 2019-10-29 09:40 _L_Y_T 阅读(182) 评论(0) 推荐(0) 编辑