HDU 1087 Super Jumping! Jumping! Jumping!

 1 //#define LOCAL
 2 #include <iostream>
 3 #include <cstdio>
 4 #include <cstring>
 5 #include <algorithm>
 6 using namespace std;
 7 
 8 int a[1010];
 9 int dp[1010];
10 
11 int main(void)
12 {
13     #ifdef LOCAL
14         freopen("1087in.txt", "r", stdin);
15     #endif
16 
17     int n;
18     while(scanf("%d", &n) && n)
19     {
20         int i;
21         for(i = 0; i < n; ++i)
22         {
23             scanf("%d", &a[i]);
24             dp[i] = a[i];
25         }
26 
27         for(i = 1; i < n; ++i)
28             for(int j = 0; j < i; ++j)
29             {
30                 if(a[j] < a[i])
31                     dp[i] = max(dp[i], dp[j] + a[i]);
32             }
33 
34         int ans = a[0];
35         for(i = 1; i < n; ++i)
36             ans = max(ans, dp[i]);
37         printf("%d\n", ans);
38     }
39     return 0;
40 }