学步园

Problem - 1087 http://acm.hdu.edu.cn/showproblem.php?pid=1087

/***************************
# 2013-9-13 13:44:52 
# Time: 15MS   Memory: 236K
# Author: zyh
# Status: Accepted
***************************/ 


#include<stdio.h>
#include<string.h>

struct point{
	int v,s;
}a[1005];
int main()
{
	int n,i,j,sum,Max;
	
	while(~scanf("%d",&n),n)
	{
		for(Max=0,i=0;i<n;i++){
			scanf("%d",&a[i].v);
			for(sum=a[i].v,j=i-1;j>=0;j--){
				if(a[i].v>a[j].v && sum<a[j].s + a[i].v){
					sum = a[j].s + a[i].v;
				}
			}
			a[i].s = sum;
			if(Max<sum) Max = sum;
		}		
		printf("%d\n",Max);
	}
	return 0;
}