标签:des style io color ar os sp for strong
| Time Limit: 2000MS | Memory Limit: 65536K | |
| Total Submissions: 34454 | Accepted: 15135 |
Description
Input
Output
Sample Input
7 1 7 3 5 9 4 8
Sample Output
4
最长上升子序列。。orz 傻逼居然直接把dp[n]输出了 后来wa了一时还没反应过来。。
dp[i]代表以i为结尾的最长上升子序列的长度,but dp[n]不一定最长。。其实整个dp数组就是无序的了。。可以sort后输出
O(n*n)渣比写法
#include <algorithm>
#include <iostream>
#include <cstring>
#include <cstdlib>
#include <string>
#include <cctype>
#include <vector>
#include <cstdio>
#include <cmath>
#include <queue>
#include <stack>
#include <map>
#include <set>
#define ll long long
#define maxn 1010
#define pp pair<int,int>
#define INF 0x3f3f3f3f
#define max(x,y) ( ((x) > (y)) ? (x) : (y) )
#define min(x,y) ( ((x) > (y)) ? (y) : (x) )
using namespace std;
int n,dp[maxn],a[maxn];
void solve()
{
for(int i=2;i<=n;i++)
for(int j=1;j<i;j++)
if(a[i]>a[j]&&dp[i]<=dp[j])
dp[i]=dp[j]+1;
sort(dp+1,dp+n+1);
printf("%d\n",dp[n]);
}
int main()
{
while(~scanf("%d",&n))
{
for(int i=1;i<=n;i++)
{
dp[i]=1;
scanf("%d",&a[i]);
}
solve();
}
return 0;
}POJ 2533-Longest Ordered Subsequence(DP)
标签:des style io color ar os sp for strong
原文地址:http://blog.csdn.net/qq_16255321/article/details/41174847