题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=6188 题意:给了n个数,然后现在问我们最多构成多少个对子和顺子,其中对子是2个相同的牌,顺子是3个连续的牌. 解法:考虑贪心,我们尽量放对子,但是有一种特殊情况就是,我们可以退一个对子出来和周围的相邻点构成顺子. #include <bits/stdc++.h> using namespace std; const int maxn = 1e6+6; int cnt[maxn]; int main…
栈. 将数字排序后,一个一个压入栈.如果栈顶两个元素形成了对子,那么$ans+1$,弹出栈顶两个元素:如果栈顶三个元素形成了顺子,那么$ans+1$,弹出栈顶三个元素. #include<bits/stdc++.h> using namespace std; const int maxn = 1000000 + 10; int n; int a[maxn]; int b[maxn]; int c[maxn]; int main() { while(~scanf("%d",…
用vis表贪心异常方便 #include<bits/stdc++.h> #define rep(i,j,k) for(register int i=j;i<=k;i++) #define rrep(i,j,k) for(register int i=j;i>=k;i--) using namespace std; typedef long long ll; const int maxn = 1e6+11; const int N = 1e6; int num[maxn],n,q;…
Duizi and Shunzi Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2883 Accepted Submission(s): 1110 Problem Description Nike likes playing cards and makes a problem of it. Now give you n integ…
Saving HDU Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 7194 Accepted Submission(s): 3345 Problem Description 话说上回讲到海东集团面临内外交困,公司的元老也只剩下XHD夫妇二人了.显然,作为多年拼搏的商人,XHD不会坐以待毙的. 一天,当他正在苦思冥想解困良策的…
http://acm.hdu.edu.cn/showproblem.php?pid=3037 Lucas定理模板. 现在才写,noip滚粗前兆QAQ #include<cstdio> #include<cstring> #include<algorithm> using namespace std; typedef long long ll; int jc[100003]; int p; int ipow(int x, int b) { ll t = 1, w = x;…
Special equations Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4569 Description Let f(x) = a nx n +...+ a 1x +a 0, in which a i (0 <= i <= n) are all known integers. We call f(x) 0 (mod…
The kth great number Time Limit:1000MS Memory Limit:65768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4006 Description Xiao Ming and Xiao Bao are playing a simple Numbers game. In a round Xiao Ming can choose to write down a nu…
How many integers can you find Time Limit:5000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1796 Description Now you get a number N, and a M-integers set, you should find out how many integers which are sm…
hdu5901题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5901 code vs 3223题目链接:http://codevs.cn/problem/3223/ 思路:主要是用了一个Meisell-Lehmer算法模板,复杂度O(n^(2/3)).讲道理,我不是很懂(瞎说什么大实话....),下面输出请自己改 #include<bits/stdc++.h> using namespace std; typedef long long LL;…