#ifdef ONPC
#define _GLIBCXX_DEBUG
#endif
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#include <malloc.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
using ll = long long;
using ull = unsigned long long;
using ld = long double;
template<typename T1, typename T2> istream& operator>>(istream& in, pair<T1, T2>& p) {in >> p.first >> p.second; return in;}
template<typename T1, typename T2> ostream& operator<<(ostream& out, pair<T1, T2>& p) {out << p.first << ' ' << p.second; return out;}
template<typename T> istream& operator>>(istream& in, vector<T>& v) {for (auto& x : v) in >> x; return in;}
template<typename T> ostream& operator<<(ostream& out, vector<T>& v) {for (auto& x : v) out << x << ' '; return out;}
template<typename T> ostream& operator<<(ostream& out, set<T>& v) {for (auto& x : v) out << x << ' '; return out;}
template<typename T> ostream& operator<<(ostream& out, multiset<T>& v) {for (auto& x : v) out << x << ' '; return out;}
const int MAX_INT = 2147483647;
const double pi = acos(-1.0);
const int mod = 1e9 + 7;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
struct Fenwick {
vector<ll> t;
int SIZE;
Fenwick(int n): SIZE(n) {
t.assign(SIZE, 0);
}
void inc(int ind, ll delta) {
for (int i = ind; i < SIZE; i = (i | (i + 1))) t[i] += delta;
}
ll sum(int r) {
ll res = 0;
for (; r >= 0; r = (r & (r + 1)) - 1) res += t[r];
return res;
}
ll sum(int l, int r) {
if (l > r) return 0;
return sum(r) - sum(l - 1);
}
};
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int n;
cin >> n;
vector<int> a(n + 1);
for (int i = 1; i <= n; i++) cin >> a[i];
vector<int> dp(n + 1, 1e9);
dp[0] = 0;
Fenwick f(1000001);
int j = 1;
for (int i = 1; i <= n; i++) {
while (f.sum(a[j] + 1, a[i] - 1) > 0) {
f.inc(a[j], 1);
j++;
}
dp[i] = dp[j - 1] + 1;
if (i < n && a[i + 1] < a[i]) {
for (int k = j; k <= i; k++) f.inc(a[k], 1);
j = i + 1;
}
}
cout << dp[n] << '\n';
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
8280 KB |
Output is correct |
2 |
Correct |
2 ms |
8284 KB |
Output is correct |
3 |
Correct |
2 ms |
8284 KB |
Output is correct |
4 |
Correct |
1 ms |
8144 KB |
Output is correct |
5 |
Correct |
2 ms |
8284 KB |
Output is correct |
6 |
Correct |
2 ms |
8136 KB |
Output is correct |
7 |
Correct |
2 ms |
8284 KB |
Output is correct |
8 |
Correct |
2 ms |
8052 KB |
Output is correct |
9 |
Correct |
2 ms |
8144 KB |
Output is correct |
10 |
Correct |
2 ms |
8284 KB |
Output is correct |
11 |
Correct |
2 ms |
8284 KB |
Output is correct |
12 |
Correct |
2 ms |
8284 KB |
Output is correct |
13 |
Correct |
2 ms |
8284 KB |
Output is correct |
14 |
Correct |
2 ms |
8284 KB |
Output is correct |
15 |
Correct |
2 ms |
8284 KB |
Output is correct |
16 |
Correct |
2 ms |
8284 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
8280 KB |
Output is correct |
2 |
Correct |
2 ms |
8284 KB |
Output is correct |
3 |
Correct |
2 ms |
8284 KB |
Output is correct |
4 |
Correct |
1 ms |
8144 KB |
Output is correct |
5 |
Correct |
2 ms |
8284 KB |
Output is correct |
6 |
Correct |
2 ms |
8136 KB |
Output is correct |
7 |
Correct |
2 ms |
8284 KB |
Output is correct |
8 |
Correct |
2 ms |
8052 KB |
Output is correct |
9 |
Correct |
2 ms |
8144 KB |
Output is correct |
10 |
Correct |
2 ms |
8284 KB |
Output is correct |
11 |
Correct |
2 ms |
8284 KB |
Output is correct |
12 |
Correct |
2 ms |
8284 KB |
Output is correct |
13 |
Correct |
2 ms |
8284 KB |
Output is correct |
14 |
Correct |
2 ms |
8284 KB |
Output is correct |
15 |
Correct |
2 ms |
8284 KB |
Output is correct |
16 |
Correct |
2 ms |
8284 KB |
Output is correct |
17 |
Correct |
2 ms |
8284 KB |
Output is correct |
18 |
Correct |
2 ms |
8284 KB |
Output is correct |
19 |
Correct |
2 ms |
8284 KB |
Output is correct |
20 |
Correct |
2 ms |
8284 KB |
Output is correct |
21 |
Correct |
2 ms |
8284 KB |
Output is correct |
22 |
Correct |
2 ms |
8140 KB |
Output is correct |
23 |
Correct |
2 ms |
8284 KB |
Output is correct |
24 |
Correct |
2 ms |
8284 KB |
Output is correct |
25 |
Correct |
2 ms |
8284 KB |
Output is correct |
26 |
Correct |
2 ms |
8284 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
8280 KB |
Output is correct |
2 |
Correct |
2 ms |
8284 KB |
Output is correct |
3 |
Correct |
2 ms |
8284 KB |
Output is correct |
4 |
Correct |
1 ms |
8144 KB |
Output is correct |
5 |
Correct |
2 ms |
8284 KB |
Output is correct |
6 |
Correct |
2 ms |
8136 KB |
Output is correct |
7 |
Correct |
2 ms |
8284 KB |
Output is correct |
8 |
Correct |
2 ms |
8052 KB |
Output is correct |
9 |
Correct |
2 ms |
8144 KB |
Output is correct |
10 |
Correct |
2 ms |
8284 KB |
Output is correct |
11 |
Correct |
2 ms |
8284 KB |
Output is correct |
12 |
Correct |
2 ms |
8284 KB |
Output is correct |
13 |
Correct |
2 ms |
8284 KB |
Output is correct |
14 |
Correct |
2 ms |
8284 KB |
Output is correct |
15 |
Correct |
2 ms |
8284 KB |
Output is correct |
16 |
Correct |
2 ms |
8284 KB |
Output is correct |
17 |
Correct |
2 ms |
8284 KB |
Output is correct |
18 |
Correct |
2 ms |
8284 KB |
Output is correct |
19 |
Correct |
2 ms |
8284 KB |
Output is correct |
20 |
Correct |
2 ms |
8284 KB |
Output is correct |
21 |
Correct |
2 ms |
8284 KB |
Output is correct |
22 |
Correct |
2 ms |
8140 KB |
Output is correct |
23 |
Correct |
2 ms |
8284 KB |
Output is correct |
24 |
Correct |
2 ms |
8284 KB |
Output is correct |
25 |
Correct |
2 ms |
8284 KB |
Output is correct |
26 |
Correct |
2 ms |
8284 KB |
Output is correct |
27 |
Correct |
2 ms |
8284 KB |
Output is correct |
28 |
Correct |
3 ms |
8284 KB |
Output is correct |
29 |
Correct |
2 ms |
8284 KB |
Output is correct |
30 |
Correct |
2 ms |
8284 KB |
Output is correct |
31 |
Correct |
2 ms |
8284 KB |
Output is correct |
32 |
Correct |
2 ms |
8144 KB |
Output is correct |
33 |
Correct |
2 ms |
8284 KB |
Output is correct |
34 |
Correct |
2 ms |
8284 KB |
Output is correct |
35 |
Correct |
2 ms |
8284 KB |
Output is correct |
36 |
Correct |
2 ms |
8284 KB |
Output is correct |
37 |
Correct |
2 ms |
8284 KB |
Output is correct |
38 |
Correct |
2 ms |
8284 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
8280 KB |
Output is correct |
2 |
Correct |
2 ms |
8284 KB |
Output is correct |
3 |
Correct |
2 ms |
8284 KB |
Output is correct |
4 |
Correct |
1 ms |
8144 KB |
Output is correct |
5 |
Correct |
2 ms |
8284 KB |
Output is correct |
6 |
Correct |
2 ms |
8136 KB |
Output is correct |
7 |
Correct |
2 ms |
8284 KB |
Output is correct |
8 |
Correct |
2 ms |
8052 KB |
Output is correct |
9 |
Correct |
2 ms |
8144 KB |
Output is correct |
10 |
Correct |
2 ms |
8284 KB |
Output is correct |
11 |
Correct |
2 ms |
8284 KB |
Output is correct |
12 |
Correct |
2 ms |
8284 KB |
Output is correct |
13 |
Correct |
2 ms |
8284 KB |
Output is correct |
14 |
Correct |
2 ms |
8284 KB |
Output is correct |
15 |
Correct |
2 ms |
8284 KB |
Output is correct |
16 |
Correct |
2 ms |
8284 KB |
Output is correct |
17 |
Correct |
2 ms |
8284 KB |
Output is correct |
18 |
Correct |
2 ms |
8284 KB |
Output is correct |
19 |
Correct |
2 ms |
8284 KB |
Output is correct |
20 |
Correct |
2 ms |
8284 KB |
Output is correct |
21 |
Correct |
2 ms |
8284 KB |
Output is correct |
22 |
Correct |
2 ms |
8140 KB |
Output is correct |
23 |
Correct |
2 ms |
8284 KB |
Output is correct |
24 |
Correct |
2 ms |
8284 KB |
Output is correct |
25 |
Correct |
2 ms |
8284 KB |
Output is correct |
26 |
Correct |
2 ms |
8284 KB |
Output is correct |
27 |
Correct |
2 ms |
8284 KB |
Output is correct |
28 |
Correct |
3 ms |
8284 KB |
Output is correct |
29 |
Correct |
2 ms |
8284 KB |
Output is correct |
30 |
Correct |
2 ms |
8284 KB |
Output is correct |
31 |
Correct |
2 ms |
8284 KB |
Output is correct |
32 |
Correct |
2 ms |
8144 KB |
Output is correct |
33 |
Correct |
2 ms |
8284 KB |
Output is correct |
34 |
Correct |
2 ms |
8284 KB |
Output is correct |
35 |
Correct |
2 ms |
8284 KB |
Output is correct |
36 |
Correct |
2 ms |
8284 KB |
Output is correct |
37 |
Correct |
2 ms |
8284 KB |
Output is correct |
38 |
Correct |
2 ms |
8284 KB |
Output is correct |
39 |
Correct |
56 ms |
15248 KB |
Output is correct |
40 |
Correct |
86 ms |
19780 KB |
Output is correct |
41 |
Correct |
43 ms |
13756 KB |
Output is correct |
42 |
Correct |
40 ms |
13140 KB |
Output is correct |
43 |
Correct |
29 ms |
11604 KB |
Output is correct |
44 |
Correct |
114 ms |
22648 KB |
Output is correct |
45 |
Correct |
116 ms |
22664 KB |
Output is correct |
46 |
Correct |
125 ms |
22724 KB |
Output is correct |
47 |
Correct |
98 ms |
22944 KB |
Output is correct |
48 |
Correct |
149 ms |
23084 KB |
Output is correct |
49 |
Correct |
137 ms |
22900 KB |
Output is correct |
50 |
Correct |
122 ms |
22664 KB |
Output is correct |
51 |
Correct |
117 ms |
22824 KB |
Output is correct |
52 |
Correct |
116 ms |
22652 KB |
Output is correct |
53 |
Correct |
125 ms |
22836 KB |
Output is correct |
54 |
Correct |
125 ms |
22724 KB |
Output is correct |
55 |
Correct |
115 ms |
22652 KB |
Output is correct |
56 |
Correct |
111 ms |
22612 KB |
Output is correct |
57 |
Correct |
123 ms |
22840 KB |
Output is correct |
58 |
Correct |
125 ms |
22836 KB |
Output is correct |
59 |
Correct |
134 ms |
22612 KB |
Output is correct |
60 |
Correct |
118 ms |
22612 KB |
Output is correct |
61 |
Correct |
118 ms |
22780 KB |
Output is correct |
62 |
Correct |
112 ms |
22608 KB |
Output is correct |