This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
typedef long long ll;
#define f first
#define s second
#define pb push_back
#define ep emplace
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define uniquev(v) sort(all(v)), (v).resize(unique(all(v)) - (v).begin())
#define mem(f,x) memset(f , x , sizeof(f))
#define sz(x) (int)(x).size()
#define __lcm(a, b) (1ll * ((a) / __gcd((a), (b))) * (b))
#define mxx *max_element
#define mnn *min_element
#define cntbit(x) __builtin_popcountll(x)
using namespace std;
const int N = 1e6 + 10;
int a[N];
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n;
cin >> n;
set <int> st;
st.insert(n + 1);
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
int cnt = 0;
for (int i = 1; i <= n; i++) {
int lim = *st.lower_bound(a[i]);
st.insert(a[i]);
cnt++;
while (i <= n && a[i + 1] >= a[i] && a[i + 1] <= lim) {
i++;
st.insert(a[i]);
}
}
cout << cnt << '\n';
return 0;
}
/*
4 3
2 3
2 6 2
2 4 2
6 5 1
1 2 3
*/
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