Submission #758557

#	Time	Username	Problem	Language	Result	Execution time	Memory
758557		scanhex	Segments (IZhO18_segments)	C++17	7 / 100	5039 ms	3704 KiB

segments

#include <bits/stdc++.h>

using namespace std;
using nagai = long long;

struct dss {
	vector<pair<int,int>> segs;
	void insert(int l, int r) {
		segs.push_back({l, r});
	}
	int get(int l, int r, int k) {
		if (k == 0) return segs.size();
		int res = 0;
		for (auto& x : segs) {
			int ll = max(x.first, l), rr = min(x.second, r); 
			if (rr - ll + 1 >= k)
				++res;
		}
		return res;
	}
};

const int oo = 0x3f3f3f3f;

struct rofl2d {
	vector<pair<int,int>> pts;
	void insert(int x, int y) {
		pts.push_back({x, y});
	}

	// all inclusive
	int get(int x1, int x2, int y1, int y2) {
		int res = 0;
		for (auto p : pts) 
			if (x1 <= p.first && p.first <= x2 && y1 <= p.second && p.second <= y2) 
				++res;
		return res;
	}
};


struct ds {
	int tot = 0;
	rofl2d rofl_l, rofl_r;
	void insert(int l, int r) {
		++tot;
		rofl_l.insert(l, r - l);
		rofl_r.insert(r, r - l);
	}
	int get(int l, int r, int k) {
		if (k == 0) return tot;
		int res = tot;
		res -= rofl_l.get(r - k + 2, oo, k - 1, oo);
		res -= rofl_r.get(0, l + k - 2, k - 1, oo);
		res -= rofl_l.get(0, oo, 0, k - 2);
		return res;
	}
};


int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n, t; 
	cin >> n >> t; 
	int lastans = 0;
	vector<pair<int, int>> segs;
	ds add, del;
	while (n--) {
		int tt;
		cin >> tt; 
		if (tt == 1) {
			int a, b;
			cin >> a >> b; 
			a ^= t * lastans;
			b ^= t * lastans;
			if (a > b) swap(a, b);
			segs.push_back({a, b});
			add.insert(a, b);
		}
		else if (tt == 2) {
			int id; 
			cin >> id; 
			--id;
			del.insert(segs[id].first, segs[id].second);
		}
		else {
			int a, b, k;
			cin >> a >> b >> k;
			a ^= t * lastans;
			b ^= t * lastans;
			if (a > b) swap(a, b);
			lastans = add.get(a, b, k) - del.get(a, b, k);
			cout << lastans << '\n';
		}
	}
}

• Subtask 1: 7 / 7
• Subtask 2: 0 / 15
• Subtask 3: 0 / 16
• Subtask 4: 0 / 17
• Subtask 5: 0 / 20
• Subtask 6: 0 / 25