#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define int ll
#define fi first
#define se second
#define ld long double
#define pb push_back
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
int N;
cin >> N;
vector<int> v(N);
vector<int> k;
int ans = 0;
for (int &i : v) {
cin >> i;
while (k.size() && k.back() > i) k.pop_back();
if (i == 0) continue;
if (!k.size() || k.back() != i) {
ans++;
k.pb(i);
}
}
cout << ans << endl;
}
