#include <iostream>
#define getarr(a,n) for (int i=0;i<n;i++) cin>>(a)[i]
using namespace std;
int main()
{
    int n,t;
    cin>>n;
    t=n-1;
    int a[n];
    getarr(a,n);
    for (int i=n-1;i>0;i--)
    {
        if (a[i]>a[i-1])
           t--;
        else
            break;
    }
    cout<<t<<endl;
    
}