防卫导弹

/*
* @author  Panoss
*/
#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<algorithm>
#include<vector>
#include<ctime>
#include<stack>
#include<queue>
#include<list>
using namespace std;
#define DBG 1
#define fori(i,a,b) for(int i = (a); i < (b); i++)
#define forie(i,a,b) for(int i = (a); i <= (b); i++)
#define ford(i,a,b) for(int i = (a); i > (b); i--)
#define forde(i,a,b) for(int i = (a); i >= (b); i--)
#define forls(i,a,b,n) for(int i = (a); i != (b); i = n[i])
#define mset(a,v) memset(a, v, sizeof(a))
#define mcpy(a,b) memcpy(a, b, sizeof(a))
#define dout  DBG && cerr << __LINE__ << " >>| "
#define checkv(x) dout << #x"=" << (x) << " | "<<endl
#define checka(array,a,b) if(DBG) { \
    dout << #array"[] | " << endl;     forie(i, a, b) cerr << "[" << i << "]=" << array[i] << " |" << ((i - (a)+1) % 5 ? " " : "\n"); if (((b)-(a)+1) % 5) cerr << endl; }
#define redata(T, x) T x; cin >> x
#define MIN_LD -2147483648
#define MAX_LD  2147483647
#define MIN_LLD -9223372036854775808
#define MAX_LLD  9223372036854775807
#define MAX_INF 18446744073709551615
inline int  reint() { int d; scanf("%d", &d); return d; }
inline long relong() { long l; scanf("%ld", &l); return l; }
inline char rechar() { scanf(" "); return getchar(); }
inline double redouble() { double d; scanf("%lf", &d); return d; }
inline string restring() { string s; cin >> s; return s; }

int h[105];
int f[105];     ///f[i] 表示为选择截击的第i个导弹，从这个导弹开始最多能截击的导弹数目

int DP(int n)
{
    mset(f,0);
    f[n] = 1;   ///初始化截击最后一枚导弹，最多只能截击一枚
    int ans_max = 0;
    forde(i,n-1,1)
    {
        //checkv(i);
        int MAX = 0;
        forie(j,i+1,n)
        {
            if(h[j] <= h[i] && MAX < f[j])
            {
                MAX = f[j];
                //checkv(MAX);
                //checkv(j);
                //checkv(f[j]);
            }
        }
        f[i] = MAX + 1;
        ans_max = max(ans_max,f[i]);
    }
    return ans_max;
}
int main()
{
    int n;
    while(scanf("%d",&n)==1&&n)
    {
        forie(i,1,n)
            scanf("%d",&h[i]);
        cout << DP(n) << endl;
    }
}