摘要: 1 #include "cstdio" 2 #include "math.h" 3 #include "cstring" 4 #define mod 1000000007LL 5 #define LL long long 6 7 struct node 8 { 9 LL cnt,sum,sqsum; 10 node() {cnt=-1;sum=sqsum=0;... 阅读全文
posted @ 2018-06-04 21:17 ouyang_wsgwz 阅读(215) 评论(0) 推荐(0) 编辑