oj.uz

Submission #531751

# Submission time Handle Problem Language Result Execution time Memory
531751 2022-03-01T11:28:36 Z akhan42 Examination (JOI19_examination) C++17
43 / 100
 3000 ms 33928 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 = 100 * 1000 + 10;
int n, q;
int a[MX], b[MX], c[MX];
vi a2i[MX], b2i[MX];
int cl[MX];
int S = 250;


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;
	set<int> sas, sbs, scs;
	int mx_x = -1, mx_y = -1, mx_z = -1;
	forn(i, n) {
		int x, y;
		cin >> x >> y;

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

		sas.insert(x);
		sbs.insert(y);
		scs.insert(x + y);

		maxeq(mx_x, x);
		maxeq(mx_y, y);
		maxeq(mx_z, x + y);
	}

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

		if(sas.lower_bound(l) != sas.end())
			l = *sas.lower_bound(l);
		else
			l = mx_x + 1;

		if(sbs.lower_bound(r) != sbs.end())
			r = *sbs.lower_bound(r);
		else
			r = mx_y + 1;

		if(scs.lower_bound(cc) != scs.end())
			cc = *scs.lower_bound(cc);
		else
			cc = mx_z + 1;

		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(sz(a2i[l]) > S || ct > 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 3 ms 5708 KB Output is correct
2 Correct 4 ms 5708 KB Output is correct
3 Correct 3 ms 5708 KB Output is correct
4 Correct 4 ms 5708 KB Output is correct
5 Correct 4 ms 5708 KB Output is correct
6 Correct 4 ms 5772 KB Output is correct
7 Correct 19 ms 6752 KB Output is correct
8 Correct 19 ms 6716 KB Output is correct
9 Correct 19 ms 6732 KB Output is correct
10 Correct 16 ms 6476 KB Output is correct
11 Correct 14 ms 6560 KB Output is correct
12 Correct 7 ms 6092 KB Output is correct
13 Correct 18 ms 6748 KB Output is correct
14 Correct 18 ms 6732 KB Output is correct
15 Correct 24 ms 6620 KB Output is correct
16 Correct 10 ms 6476 KB Output is correct
17 Correct 17 ms 6476 KB Output is correct
18 Correct 6 ms 5964 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2461 ms 27300 KB Output is correct
2 Correct 2480 ms 27428 KB Output is correct
3 Correct 2547 ms 27432 KB Output is correct
4 Correct 1122 ms 22884 KB Output is correct
5 Correct 396 ms 22936 KB Output is correct
6 Correct 134 ms 13344 KB Output is correct
7 Correct 1125 ms 27428 KB Output is correct
8 Correct 1091 ms 27428 KB Output is correct
9 Correct 844 ms 27524 KB Output is correct
10 Correct 366 ms 22844 KB Output is correct
11 Correct 1075 ms 22780 KB Output is correct
12 Correct 76 ms 12996 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2461 ms 27300 KB Output is correct
2 Correct 2480 ms 27428 KB Output is correct
3 Correct 2547 ms 27432 KB Output is correct
4 Correct 1122 ms 22884 KB Output is correct
5 Correct 396 ms 22936 KB Output is correct
6 Correct 134 ms 13344 KB Output is correct
7 Correct 1125 ms 27428 KB Output is correct
8 Correct 1091 ms 27428 KB Output is correct
9 Correct 844 ms 27524 KB Output is correct
10 Correct 366 ms 22844 KB Output is correct
11 Correct 1075 ms 22780 KB Output is correct
12 Correct 76 ms 12996 KB Output is correct
13 Correct 2783 ms 27420 KB Output is correct
14 Correct 2900 ms 27432 KB Output is correct
15 Correct 2382 ms 27300 KB Output is correct
16 Correct 1236 ms 23076 KB Output is correct
17 Correct 427 ms 22920 KB Output is correct
18 Correct 147 ms 13268 KB Output is correct
19 Correct 2535 ms 27432 KB Output is correct
20 Correct 2353 ms 27420 KB Output is correct
21 Correct 1481 ms 27440 KB Output is correct
22 Correct 352 ms 22844 KB Output is correct
23 Correct 1033 ms 22752 KB Output is correct
24 Correct 87 ms 12904 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5708 KB Output is correct
2 Correct 4 ms 5708 KB Output is correct
3 Correct 3 ms 5708 KB Output is correct
4 Correct 4 ms 5708 KB Output is correct
5 Correct 4 ms 5708 KB Output is correct
6 Correct 4 ms 5772 KB Output is correct
7 Correct 19 ms 6752 KB Output is correct
8 Correct 19 ms 6716 KB Output is correct
9 Correct 19 ms 6732 KB Output is correct
10 Correct 16 ms 6476 KB Output is correct
11 Correct 14 ms 6560 KB Output is correct
12 Correct 7 ms 6092 KB Output is correct
13 Correct 18 ms 6748 KB Output is correct
14 Correct 18 ms 6732 KB Output is correct
15 Correct 24 ms 6620 KB Output is correct
16 Correct 10 ms 6476 KB Output is correct
17 Correct 17 ms 6476 KB Output is correct
18 Correct 6 ms 5964 KB Output is correct
19 Correct 2461 ms 27300 KB Output is correct
20 Correct 2480 ms 27428 KB Output is correct
21 Correct 2547 ms 27432 KB Output is correct
22 Correct 1122 ms 22884 KB Output is correct
23 Correct 396 ms 22936 KB Output is correct
24 Correct 134 ms 13344 KB Output is correct
25 Correct 1125 ms 27428 KB Output is correct
26 Correct 1091 ms 27428 KB Output is correct
27 Correct 844 ms 27524 KB Output is correct
28 Correct 366 ms 22844 KB Output is correct
29 Correct 1075 ms 22780 KB Output is correct
30 Correct 76 ms 12996 KB Output is correct
31 Correct 2783 ms 27420 KB Output is correct
32 Correct 2900 ms 27432 KB Output is correct
33 Correct 2382 ms 27300 KB Output is correct
34 Correct 1236 ms 23076 KB Output is correct
35 Correct 427 ms 22920 KB Output is correct
36 Correct 147 ms 13268 KB Output is correct
37 Correct 2535 ms 27432 KB Output is correct
38 Correct 2353 ms 27420 KB Output is correct
39 Correct 1481 ms 27440 KB Output is correct
40 Correct 352 ms 22844 KB Output is correct
41 Correct 1033 ms 22752 KB Output is correct
42 Correct 87 ms 12904 KB Output is correct
43 Execution timed out 3091 ms 33928 KB Time limit exceeded
44 Halted 0 ms 0 KB -