oj.uz

Submission #531741

# Submission time Handle Problem Language Result Execution time Memory
531741 2022-03-01T11:11:08 Z akhan42 Examination (JOI19_examination) C++17
43 / 100
 3000 ms 32908 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

#define F first
#define S second
#define forn(i, n) for(int i = 0; i < n; ++i)
#define forbn(i, b, n) for(int i = b; i < n; ++i)
#define sz(v) (int)v.size()
#define pb push_back
#define eb emplace_back
#define all(v) v.begin(), v.end()
#define min3(a, b, c) min(a, min(b, c))
#define at(m, k) (m.find(k) != m.end() ? m[k] : 0)

typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef long long ll;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

template <class T> inline void mineq(T &a, T b) { a = min(a, b); }
template <class T> inline void maxeq(T &a, T b) { a = max(a, b); }


const int MX = 200 * 1000 + 10;
int n, q;
int a[MX], b[MX], c[MX];
vi a2i[MX], b2i[MX];
int cl[MX];
int S = 450;


struct Fenw {
	int mx = MX - 1;
	vi bit;

	Fenw() {
		bit.assign(MX, 0);
	}

	void upd(int i, int v) {
		for(i += 1; i <= mx; i += i & (-i))
			bit[i] += v;
	}

	int psum(int i) {
		int sum = 0;
		for(; i > 0; i -= i & (-i))
			sum += bit[i];
		return sum;
	}

	int query(int cc) {
		return psum(mx) - psum(cc);
	}
};



bool cmp(pair<ii, ii> p1, pair<ii, ii> p2) {
	ii a = p1.F, b = p2.F;

	if(cl[a.F] != cl[b.F])
		return a.F < b.F;
	return (cl[a.F] % 2) ? a.S > b.S : a.S < b.S;
}


struct Mo {
	int l, r;
	Fenw fenw;

	void init(int l, int r) {
		this->l = l, this->r = r;

		forn(i, n)
			if(a[i] >= l && b[i] >= r)
				fenw.upd(c[i], 1);
	}

	void add_left() {
		l -= 1;
		for(int i: a2i[l])
			if(b[i] >= r)
				fenw.upd(c[i], 1);
			else
				break;
	}

	void pop_left() {
		for(int i: a2i[l])
			if(b[i] >= r)
				fenw.upd(c[i], -1);
			else
				break;
		l += 1;
	}

	void add_right() {
		for(int i: b2i[r])
			if(a[i] >= l)
				fenw.upd(c[i], -1);
			else
				break;
		r += 1;
	}

	void pop_right() {
		r -= 1;
		for(int i: b2i[r])
			if(a[i] >= l)
				fenw.upd(c[i], 1);
			else
				break;
	}

	int get_ans(int cc) {
		return fenw.query(cc);
	}
};


void comp(vi& v) {
	set<int> sl;
	for(int el: v)
		sl.insert(el);

	int ct = 0;
	map<int, int> v2i;
	for(int el: sl)
		v2i[el] = ct++;

	for(int& el: v)
		el = v2i[el];
}


bool cmp1(int i, int j) {
	return b[i] > b[j];
}


bool cmp2(int i, int j) {
	return a[i] > a[j];
}


void solve()
{
	cin >> n >> q;

	vi as, bs, cs;
	forn(i, n) {
		int x, y;
		cin >> x >> y;

		as.pb(x);
		bs.pb(y);
		cs.pb(x + y);
	}

	forn(_, q) {
		int l, r, cc;
		cin >> l >> r >> cc;

		as.pb(l);
		bs.pb(r);
		cs.pb(cc);
	}

	comp(as);
	comp(bs);
	comp(cs);

	forn(i, n)
	{
		a[i] = as[i];
		b[i] = bs[i];
		c[i] = cs[i];

		a2i[a[i]].pb(i);
		b2i[b[i]].pb(i);
	}

	forn(i, MX) {
		sort(all(a2i[i]), cmp1);
		sort(all(b2i[i]), cmp2);
	}

	int ct = 0, i = 0;
	forn(l, MX) {
		if(ct != 0 && ct + sz(a2i[l]) > S) {
			ct = sz(a2i[l]);
			i += 1;
		} else {
			ct += sz(a2i[l]);
		}
		cl[l] = i;
	}

	vector<pair<ii, ii>> qs;

	forn(ind, q) {
		int l = as[ind + n], r = bs[ind + n], cc = cs[ind + n];

		qs.pb({{l, r}, {cc, ind}});
	}

	sort(all(qs), cmp);

	Mo mo;
	vi ans(q);

	forn(i, q) {
		int l = qs[i].F.F, r = qs[i].F.S, cc = qs[i].S.F, ind = qs[i].S.S;

		if(i == 0) {
			mo.init(l, r);
		}
		else {
			while(l != mo.l || r != mo.r) {
				if(l < mo.l)
					mo.add_left();
				else if(r > mo.r)
					mo.add_right();
				else if(l > mo.l)
					mo.pop_left();
				else
					mo.pop_right();
			}
		}

		ans[ind] = mo.get_ans(cc);
//		cout << l << ' ' << r << ' ' << ans[ind] << '\n';
	}

	for(int el: ans)
		cout << el << '\n';
}


int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);

//	freopen("haybales.in", "r", stdin);
//	freopen("haybales.out", "w", stdout);

	int t = 1;
//	cin >> t;
	while(t--)
		solve();
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11212 KB Output is correct
2 Correct 6 ms 11212 KB Output is correct
3 Correct 6 ms 11216 KB Output is correct
4 Correct 6 ms 11212 KB Output is correct
5 Correct 7 ms 11212 KB Output is correct
6 Correct 7 ms 11212 KB Output is correct
7 Correct 29 ms 12084 KB Output is correct
8 Correct 29 ms 11980 KB Output is correct
9 Correct 30 ms 12108 KB Output is correct
10 Correct 27 ms 11980 KB Output is correct
11 Correct 15 ms 11980 KB Output is correct
12 Correct 10 ms 11596 KB Output is correct
13 Correct 28 ms 12088 KB Output is correct
14 Correct 27 ms 12044 KB Output is correct
15 Correct 29 ms 11996 KB Output is correct
16 Correct 14 ms 11992 KB Output is correct
17 Correct 29 ms 11996 KB Output is correct
18 Correct 8 ms 11468 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1689 ms 22744 KB Output is correct
2 Correct 1653 ms 22756 KB Output is correct
3 Correct 1704 ms 22756 KB Output is correct
4 Correct 937 ms 22720 KB Output is correct
5 Correct 292 ms 22640 KB Output is correct
6 Correct 104 ms 18648 KB Output is correct
7 Correct 834 ms 22748 KB Output is correct
8 Correct 1016 ms 22876 KB Output is correct
9 Correct 918 ms 23208 KB Output is correct
10 Correct 247 ms 22576 KB Output is correct
11 Correct 873 ms 22548 KB Output is correct
12 Correct 69 ms 18260 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1689 ms 22744 KB Output is correct
2 Correct 1653 ms 22756 KB Output is correct
3 Correct 1704 ms 22756 KB Output is correct
4 Correct 937 ms 22720 KB Output is correct
5 Correct 292 ms 22640 KB Output is correct
6 Correct 104 ms 18648 KB Output is correct
7 Correct 834 ms 22748 KB Output is correct
8 Correct 1016 ms 22876 KB Output is correct
9 Correct 918 ms 23208 KB Output is correct
10 Correct 247 ms 22576 KB Output is correct
11 Correct 873 ms 22548 KB Output is correct
12 Correct 69 ms 18260 KB Output is correct
13 Correct 1774 ms 26192 KB Output is correct
14 Correct 1736 ms 25200 KB Output is correct
15 Correct 1663 ms 22748 KB Output is correct
16 Correct 963 ms 22716 KB Output is correct
17 Correct 324 ms 22688 KB Output is correct
18 Correct 112 ms 18748 KB Output is correct
19 Correct 1717 ms 26184 KB Output is correct
20 Correct 1675 ms 25512 KB Output is correct
21 Correct 1213 ms 26192 KB Output is correct
22 Correct 242 ms 22564 KB Output is correct
23 Correct 936 ms 22552 KB Output is correct
24 Correct 78 ms 18168 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11212 KB Output is correct
2 Correct 6 ms 11212 KB Output is correct
3 Correct 6 ms 11216 KB Output is correct
4 Correct 6 ms 11212 KB Output is correct
5 Correct 7 ms 11212 KB Output is correct
6 Correct 7 ms 11212 KB Output is correct
7 Correct 29 ms 12084 KB Output is correct
8 Correct 29 ms 11980 KB Output is correct
9 Correct 30 ms 12108 KB Output is correct
10 Correct 27 ms 11980 KB Output is correct
11 Correct 15 ms 11980 KB Output is correct
12 Correct 10 ms 11596 KB Output is correct
13 Correct 28 ms 12088 KB Output is correct
14 Correct 27 ms 12044 KB Output is correct
15 Correct 29 ms 11996 KB Output is correct
16 Correct 14 ms 11992 KB Output is correct
17 Correct 29 ms 11996 KB Output is correct
18 Correct 8 ms 11468 KB Output is correct
19 Correct 1689 ms 22744 KB Output is correct
20 Correct 1653 ms 22756 KB Output is correct
21 Correct 1704 ms 22756 KB Output is correct
22 Correct 937 ms 22720 KB Output is correct
23 Correct 292 ms 22640 KB Output is correct
24 Correct 104 ms 18648 KB Output is correct
25 Correct 834 ms 22748 KB Output is correct
26 Correct 1016 ms 22876 KB Output is correct
27 Correct 918 ms 23208 KB Output is correct
28 Correct 247 ms 22576 KB Output is correct
29 Correct 873 ms 22548 KB Output is correct
30 Correct 69 ms 18260 KB Output is correct
31 Correct 1774 ms 26192 KB Output is correct
32 Correct 1736 ms 25200 KB Output is correct
33 Correct 1663 ms 22748 KB Output is correct
34 Correct 963 ms 22716 KB Output is correct
35 Correct 324 ms 22688 KB Output is correct
36 Correct 112 ms 18748 KB Output is correct
37 Correct 1717 ms 26184 KB Output is correct
38 Correct 1675 ms 25512 KB Output is correct
39 Correct 1213 ms 26192 KB Output is correct
40 Correct 242 ms 22564 KB Output is correct
41 Correct 936 ms 22552 KB Output is correct
42 Correct 78 ms 18168 KB Output is correct
43 Execution timed out 3069 ms 32908 KB Time limit exceeded
44 Halted 0 ms 0 KB -