Description Seiji Hayashi had been a professor of the Nisshinkan Samurai School in the domain of Aizu for a long time in the 18th century. In order to reward him for his meritorious career in education, Katanobu Matsudaira, the lord of the domain of…
Get Many Persimmon Trees Time Limit:1000MS Memory Limit:30000KB 64bit IO Format:%I64d & %I64u SubmitStatusPracticePOJ 2029 Description Seiji Hayashi had been a professor of the Nisshinkan Samurai School in the domain of Aizu for a long time in…
Description Seiji Hayashi had been a professor of the Nisshinkan Samurai School in the domain of Aizu for a long time in the 18th century. In order to reward him for his meritorious career in education, Katanobu Matsudaira, the lord of the domain of…
思路: 大力出奇迹,先用二维树状数组存,然后暴力枚举 算某个矩形区域的值的示意图如下,代码在下面慢慢找... 代码: #include<cstdio> #include<map> #include<cstring> #include<algorithm> #define ll long long using namespace std; const int N = 1030+5; int bit[N][N],n,m; int lowbit(int x){ r…
题目链接:[http://acm.split.hdu.edu.cn/showproblem.php?pid=5517] 题意:定义multi_set A<a , d>,B<c , d , e>,C<x , y , z>,给出 A , B ,定义 C = A * B = ={⟨a,c,d⟩∣⟨a,b⟩∈A, ⟨c,d,e⟩∈B and b=e} .求出C之后,求C中一个元素t[i]<a , b , c>是否存在一个元素tmp<x , y , z>使…