#include<bits/stdc++.h>
using namespace std;
int n,a[100001],l,r;
int main(){
    scanf("%d",&n);
    for(int i=1;i<=n;i++){
        scanf("%d",&a[i]);
        if(a[i]>0)
          if(r==0) r=l=i;
          else l=i;
    }
    printf("%d",abs(l-r+1));
    return 0;
}