oj.uz

Submission #999537

# Submission time Handle Problem Language Result Execution time Memory
999537 2024-06-15T17:43:46 Z aykhn LIS (INOI20_lis) C++17
100 / 100
 1861 ms 135508 KB 
#include <bits/stdc++.h>

using namespace std;

#define int long long
#define inf 0x3F3F3F3F3F3F3F3F

struct DSU
{
	vector<int> e;
	void init(int n)
	{
		e.assign(n + 1, -1);
	}
	int get(int x)
	{
		if (e[x] < 0) return x;
		return e[x] = get(e[x]);
	}
	void unite(int x, int y)
	{
		x = get(x), y = get(y);
		if (x == y) return;
		if (e[x] > e[y]) swap(x, y);
		e[x] += e[y];
		e[y] = x;
	}
};
struct BIT
{
	int n;
	vector<int> ft;
	void init(int N)
	{
		n = N + 5;
		ft.assign(n + 5, 0);
	}
	void add(int pos, int val)
	{
		for (pos = pos + 1; pos <= n; pos += pos & -pos) ft[pos] += val;
 	}
	int get(int pos, int res = 0)
	{
		for (pos = pos + 1; pos > 0; pos -= pos & -pos) res += ft[pos];
		return res;
	}
};

const int MXN = 1e6 + 5;

set<int> st[MXN];
int res[MXN], v[MXN];
int ans = 0;

void add(int i)
{
	ans = max(ans, res[i]);
	auto it = st[res[i]].begin();
	while ((it = st[res[i]].upper_bound(i)) != st[res[i]].end() && v[*it] > v[i])
	{
		int x = *it;
		st[res[i]].erase(it);
		res[x] = res[i] + 1;
		add(x);
	}
	st[res[i]].insert(i);
}

signed main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n;
	array<int, 2> a[n];
	for (array<int, 2> &i : a) cin >> i[0] >> i[1];
	BIT ft;
	ft.init(n);
	for (int i = n - 1; i >= 0; i--)
	{
		int l = 1, r = n;
		while (l < r)
		{
			int mid = (l + r) >> 1;
			if (mid - ft.get(mid) >= a[i][0]) r = mid;
			else l = mid + 1;
		}
		a[i][0] = l;
		v[l] = a[i][1];
		ft.add(l, 1);
	}
	for (array<int, 2> &i : a)
	{
		res[i[0]] = 1;
		for (int j = 1; j < i[1]; j++)
		{
			auto it = st[j].lower_bound(i[0]);
			if (!(it == st[j].begin() || v[*prev(it)] >= i[1])) res[i[0]] = j + 1;
		}
		add(i[0]);
		cout << ans << '\n';
	}
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 48476 KB Output is correct
2 Correct 16 ms 48332 KB Output is correct
3 Correct 22 ms 48476 KB Output is correct
4 Correct 19 ms 48532 KB Output is correct
5 Correct 30 ms 48472 KB Output is correct
6 Correct 22 ms 48732 KB Output is correct
7 Correct 23 ms 48728 KB Output is correct
8 Correct 17 ms 50524 KB Output is correct
9 Correct 13 ms 50672 KB Output is correct
10 Correct 22 ms 48728 KB Output is correct
11 Correct 20 ms 48728 KB Output is correct
12 Correct 24 ms 48476 KB Output is correct
13 Correct 22 ms 48476 KB Output is correct
14 Correct 24 ms 48732 KB Output is correct
15 Correct 22 ms 48476 KB Output is correct
16 Correct 30 ms 48712 KB Output is correct
17 Correct 21 ms 48476 KB Output is correct
18 Correct 27 ms 48476 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 48476 KB Output is correct
2 Correct 16 ms 48332 KB Output is correct
3 Correct 22 ms 48476 KB Output is correct
4 Correct 19 ms 48532 KB Output is correct
5 Correct 30 ms 48472 KB Output is correct
6 Correct 22 ms 48732 KB Output is correct
7 Correct 23 ms 48728 KB Output is correct
8 Correct 17 ms 50524 KB Output is correct
9 Correct 13 ms 50672 KB Output is correct
10 Correct 22 ms 48728 KB Output is correct
11 Correct 20 ms 48728 KB Output is correct
12 Correct 24 ms 48476 KB Output is correct
13 Correct 22 ms 48476 KB Output is correct
14 Correct 24 ms 48732 KB Output is correct
15 Correct 22 ms 48476 KB Output is correct
16 Correct 30 ms 48712 KB Output is correct
17 Correct 21 ms 48476 KB Output is correct
18 Correct 27 ms 48476 KB Output is correct
19 Correct 175 ms 67912 KB Output is correct
20 Correct 151 ms 68180 KB Output is correct
21 Correct 215 ms 68024 KB Output is correct
22 Correct 284 ms 66644 KB Output is correct
23 Correct 186 ms 66672 KB Output is correct
24 Correct 183 ms 65364 KB Output is correct
25 Correct 181 ms 65532 KB Output is correct
26 Correct 209 ms 68024 KB Output is correct
27 Correct 181 ms 67920 KB Output is correct
28 Correct 179 ms 68180 KB Output is correct
29 Correct 179 ms 68084 KB Output is correct
30 Correct 183 ms 68020 KB Output is correct
31 Correct 288 ms 68080 KB Output is correct
32 Correct 333 ms 68076 KB Output is correct
33 Correct 291 ms 68064 KB Output is correct
34 Correct 322 ms 68100 KB Output is correct
35 Correct 298 ms 68176 KB Output is correct
36 Correct 319 ms 68020 KB Output is correct
37 Correct 308 ms 68088 KB Output is correct
38 Correct 326 ms 68028 KB Output is correct
39 Correct 311 ms 65360 KB Output is correct
40 Correct 315 ms 65360 KB Output is correct
41 Correct 141 ms 63576 KB Output is correct
42 Correct 33 ms 54648 KB Output is correct
43 Correct 168 ms 61928 KB Output is correct
44 Correct 143 ms 58656 KB Output is correct
45 Correct 19 ms 51800 KB Output is correct
46 Correct 16 ms 50776 KB Output is correct
47 Correct 60 ms 54468 KB Output is correct
48 Correct 47 ms 56268 KB Output is correct
49 Correct 25 ms 48220 KB Output is correct
50 Correct 20 ms 47704 KB Output is correct
51 Correct 42 ms 55892 KB Output is correct
52 Correct 151 ms 57940 KB Output is correct
53 Correct 104 ms 56148 KB Output is correct
54 Correct 108 ms 61112 KB Output is correct
55 Correct 35 ms 49244 KB Output is correct
56 Correct 141 ms 53784 KB Output is correct
57 Correct 55 ms 51284 KB Output is correct
58 Correct 49 ms 54716 KB Output is correct
59 Correct 19 ms 49248 KB Output is correct
60 Correct 180 ms 56656 KB Output is correct
61 Correct 27 ms 47544 KB Output is correct
62 Correct 73 ms 54700 KB Output is correct
63 Correct 41 ms 54876 KB Output is correct
64 Correct 120 ms 60396 KB Output is correct
65 Correct 116 ms 57488 KB Output is correct
66 Correct 29 ms 52052 KB Output is correct
67 Correct 76 ms 56660 KB Output is correct
68 Correct 56 ms 55380 KB Output is correct
69 Correct 100 ms 57672 KB Output is correct
70 Correct 31 ms 51812 KB Output is correct
71 Correct 1806 ms 135324 KB Output is correct
72 Correct 1861 ms 135356 KB Output is correct
73 Correct 1809 ms 135432 KB Output is correct
74 Correct 1604 ms 135508 KB Output is correct
75 Correct 1777 ms 135508 KB Output is correct
76 Correct 1837 ms 135488 KB Output is correct