#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

#define RREP(i,s,e) for (i = s; i >= e; i--)
#define rrep(i,n) RREP(i,n-1,0)
#define REP(i,s,e) for (i = s; i < e; i++)
#define rep(i,n) REP(i,0,n)
#define INF 100000000

typedef long long ll;

int main() {
    int i, n, mx, cnt;
    int a[100000];
    cin >> n;
    rep (i,n) cin >> a[i];
    mx = *max_element(a,a+n);
    cnt = 0;
    rrep (i,n) {
        if (a[i] == mx) {
            cnt++;
            mx--;
        }
    }
    cout << n-cnt << endl;
    return 0;
}