[HDOJ1087]Super Jumping! Jumping! Jumping!

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=1087

就是求最长上升子序列，但是结果求的是该序列的和，转移方程： dp[i] = max(dp[i], dp[j]+a[i])

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <iostream>
#include <cmath>
#include <queue>
#include <map>
#include <set>
#include <stack>
#include <list>
#include <vector>

using namespace std;

inline int max(int a, int b) {
    return a > b ? a : b;
}
const int maxn = 1010;
int n;
int a[maxn];
int dp[maxn];
int ans;
int main() {
    // freopen("in", "r", stdin);
    while(~scanf("%d", &n) && n) {
        ans = 0;
        for(int i = 0; i < n; i++) {
            scanf("%d", &a[i]);
        }
        for(int i = 0; i < n; i++) {
            dp[i] = a[i];
            for(int j = 0; j < i; j++) {
                if(a[j] < a[i]) {
                    dp[i] = max(dp[i], dp[j] + a[i]);
                }
            }
            ans = max(ans, dp[i]);
        }
        printf("%d
", ans);
    }
}