oj.uz

Submission #784166

# Submission time Handle Problem Language Result Execution time Memory
784166 2023-07-15T19:48:26 Z MISM06 LIS (INOI20_lis) C++17
20 / 100
 4000 ms 677452 KB 
//0 1 1 0 1
//0 1 0 0 1
//1 0 0 1 1
//0 1 1 0 1
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")
// #pragma GCC target("avx2")

using namespace std;

#define F 			first
#define S 			second
#define pb 			push_back
#define sze			size()
#define	all(x)		x.begin() , x.end()
#define wall__		cout << "--------------------------------------\n";
#define kids		int mid = (tl + tr) >> 1, cl = v << 1, cr = v << 1 | 1
#define kid1		int mid = (tl + tr) >> 1, cl = v1 << 1, cr = v1 << 1 | 1
#define kid2		int mid = (tl + tr) >> 1, cl = v2 << 1, cr = v2 << 1 | 1
#define file_io		freopen("input.cpp", "r", stdin); freopen("output.cpp", "w", stdout);

typedef long long ll;
typedef long double dl;
typedef pair < int , int > pii;
typedef pair < int , ll > pil;
typedef pair < ll , int > pli;
typedef pair < ll , ll > pll;
typedef pair < int , pii > piii;
typedef pair < ll, pll > plll;


const ll N = 1e6 + 10;
const ll mod = 1e9 + 7;
const ll inf = 2e16;
const ll INF = 1e9 + 10;
const ll lg = 32;

int n, a[N], p[N], ord[N], b[N], DP[N], ans = 0;

struct segtree1 {
	pii seg[N << 2];
	int la[N << 2];
	void build (int v = 1, int tl = 1, int tr = n) {
		la[v] = 0;
		if (tl == tr) {
			seg[v] = {p[tl], -tl};
			return;
		} kids;
		build(cl, tl, mid);
		build(cr, mid + 1, tr);
		seg[v] = min(seg[cl], seg[cr]);
	}
	void shift (int v, int tl, int tr) {
		seg[v].F += la[v];
		if (tl != tr) {
			la[v << 1] += la[v];
			la[v << 1 | 1] += la[v];
		}
		la[v] = 0;
	}
	void upd (int val, int l, int r, int v = 1, int tl = 1 , int tr = n) {
		shift(v, tl, tr);
		if (l > r) return;
		if (l == tl && r == tr) {
			la[v] += val;
			shift(v, tl, tr);
			return;
		} kids;
		upd(val, l, min(r, mid), cl, tl, mid);
		upd(val, max(l, mid + 1), r, cr, mid + 1, tr);
		seg[v] = min(seg[cl], seg[cr]);
	}
	int ask () {
		shift(1, 1, n);
		return -seg[1].S;
	}
} place;
struct segtree2 {
	vector < pii > vec[N << 2];
	vector < pii > mn[N << 2], mx[N << 2];
	int plc[N];
	void build2 (int s, int v1, int v2, int tl, int tr) {
		mn[v1][v2] = {INF, plc[tl]};
		mx[v1][v2] = {0, plc[tl]};
		if (tl == tr) return;
		kid2;
		build2(s, v1, cl, tl, mid);
		build2(s, v1, cr, mid + 1, tr);
	}
	void upd2 (int pos, int val, int v1, int v2, int tl, int tr) {
		if (tl == tr) {
			mx[v1][v2].F = val; mn[v1][v2].F = val;
			return;
		} kid2;
		if (pos <= mid) upd2(pos, val, v1, cl, tl, mid);
		else upd2(pos, val, v1, cr, mid + 1, tr);
		mx[v1][v2] = max(mx[v1][cl], mx[v1][cr]);
		mn[v1][v2] = min(mn[v1][cl], mn[v1][cr]);
	}
	pii MIN2 (int v1, int l, int r, int v2, int tl, int tr) {
		if (l == tl && r == tr) return mn[v1][v2];
		kid2;
		if (r <= mid) return MIN2(v1, l, r, cl, tl, mid);
		else if (l > mid) return MIN2(v1, l, r, cr, mid + 1, tr);
		else return min(MIN2(v1, l, mid, cl, tl, mid), MIN2(v1, mid + 1, r, cr, mid + 1, tr));
	}
	pii MAX2 (int v1, int l, int r, int v2, int tl, int tr) {
		if (l == tl && r == tr) return mx[v1][v2];
		kid2;
		if (r <= mid) return MAX2(v1, l, r, cl, tl, mid);
		else if (l > mid) return MAX2(v1, l, r, cr, mid + 1, tr);
		else return max(MAX2(v1, l, mid, cl, tl, mid), MAX2(v1, mid + 1, r, cr, mid + 1, tr));
	}
	void build (int v = 1, int tl = 1, int tr = n) {
		vec[v].pb({-1, -1});
		for (int i = tl; i <= tr; i++) {
			vec[v].pb({b[i], i});
		}
		sort(all(vec[v]));
		for (int i = 1; i <= tr - tl + 1; i++) plc[i] = vec[v][i].S;
		int len = tr - tl + 4;
		mn[v].resize((len << 2) + 5);
		mx[v].resize((len << 2) + 5);
		build2(tl - 1, v, 1, 1, tr - tl + 1);
		if (tl == tr) return;
		kids;
		build(cl, tl, mid);
		build(cr, mid + 1, tr);
	}
	void upd (int pos, int val, int v = 1, int tl = 1, int tr = n) {
		int i = lower_bound(all(vec[v]), make_pair(b[pos], pos)) - vec[v].begin();
		upd2(i, val, v, 1, 1, tr - tl + 1);
		if (tl == tr) return;
		kids;
		if (pos <= mid) upd(pos, val, cl, tl, mid);
		else upd(pos, val, cr, mid + 1, tr);
	}
	pii then_min (int bound, int l, int r, int v = 1, int tl = 1, int tr = n) {
		if (l > r) return {INF, INF};
		if (l == tl && r == tr) {
			if (vec[v].back().F < bound) return {INF, INF};
			int i = lower_bound(all(vec[v]), make_pair(bound, 0)) - vec[v].begin();
			return MIN2(v, i, tr - tl + 1, 1, 1, tr - tl + 1);
		} kids;
		return min(then_min(bound, l, min(r, mid), cl, tl, mid), then_min(bound, max(l, mid + 1), r, cr, mid + 1, tr));
	}
	pii less_max (int bound, int l, int r, int v = 1, int tl = 1, int tr = n) {
		if (l > r) return {0, 0};
		if (l == tl && r == tr) {
			int i;
			if (vec[v].back().F <= bound) i = tr - tl + 2;
			else i = lower_bound(all(vec[v]), make_pair(bound + 1, 0)) - vec[v].begin();
			--i;
			if (i) return MAX2(v, 1, i, 1, 1, tr - tl + 1);
			else return {0, 0};
		} kids;
		return max(less_max(bound, l, min(r, mid), cl, tl, mid), less_max(bound, max(l, mid + 1), r, cr, mid + 1, tr));
	}
} sg;
void calc (int o, int h) {
	// cout << o << " - " << h << '\n';
	ans = max(ans, h);
	sg.upd(o, h);
	int x = b[o];
	pii y = sg.then_min(x + 1, o + 1, n);
	// cout << y.F << " * " << y.S << '\n';
	while(y.F == h) {
		calc(y.S, h + 1);
		y = sg.then_min(x + 1, o + 1, n);
	}
}

void solve () {

	cin >> n;
	for (int i = 1; i <= n; i++) cin >> p[i] >> a[i];
	place.build();
	for (int i = 1; i <= n; i++) {
		int it = place.ask();
		b[i] = a[it]; 
		ord[it] = i;
		place.upd(1, 1, it - 1);
		place.upd(INF, it, it);
	}
	sg.build();
	for (int i = 1; i <= n; i++) {
		int o = ord[i], x = a[i];
		int h = sg.less_max(x - 1, 1, o - 1).F + 1;
		vector < pii > q;
		calc (o, h);
		cout << ans << '\n';
	}

}


int main() {
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	int t = 1;
	// cin >> t;
	while (t--) {solve();}
    return 0;
}
/*
*/
//shrek is love;

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 153 ms 313432 KB Output is correct
2 Correct 167 ms 313352 KB Output is correct
3 Correct 171 ms 316612 KB Output is correct
4 Correct 151 ms 316536 KB Output is correct
5 Correct 284 ms 316424 KB Output is correct
6 Correct 223 ms 316624 KB Output is correct
7 Correct 185 ms 316512 KB Output is correct
8 Correct 180 ms 316436 KB Output is correct
9 Correct 186 ms 316516 KB Output is correct
10 Correct 171 ms 316444 KB Output is correct
11 Correct 210 ms 316400 KB Output is correct
12 Correct 164 ms 316492 KB Output is correct
13 Correct 194 ms 316436 KB Output is correct
14 Correct 190 ms 316392 KB Output is correct
15 Correct 171 ms 316504 KB Output is correct
16 Correct 190 ms 316508 KB Output is correct
17 Correct 185 ms 316416 KB Output is correct
18 Correct 180 ms 316440 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 153 ms 313432 KB Output is correct
2 Correct 167 ms 313352 KB Output is correct
3 Correct 171 ms 316612 KB Output is correct
4 Correct 151 ms 316536 KB Output is correct
5 Correct 284 ms 316424 KB Output is correct
6 Correct 223 ms 316624 KB Output is correct
7 Correct 185 ms 316512 KB Output is correct
8 Correct 180 ms 316436 KB Output is correct
9 Correct 186 ms 316516 KB Output is correct
10 Correct 171 ms 316444 KB Output is correct
11 Correct 210 ms 316400 KB Output is correct
12 Correct 164 ms 316492 KB Output is correct
13 Correct 194 ms 316436 KB Output is correct
14 Correct 190 ms 316392 KB Output is correct
15 Correct 171 ms 316504 KB Output is correct
16 Correct 190 ms 316508 KB Output is correct
17 Correct 185 ms 316416 KB Output is correct
18 Correct 180 ms 316440 KB Output is correct
19 Correct 1455 ms 677452 KB Output is correct
20 Correct 1738 ms 676620 KB Output is correct
21 Execution timed out 4066 ms 676928 KB Time limit exceeded
22 Halted 0 ms 0 KB -