Submission #680958

#	Time	Username	Problem	Language	Result	Execution time	Memory
680958		TranGiaHuy1508	Meteors (POI11_met)	C++17	0 / 100	3042 ms	30668 KiB

met

#include <bits/stdc++.h>
using namespace std;

void main_program();

signed main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	main_program();
}

#define int long long

struct Segtree{
	vector<int> tree;
	int _n;

	Segtree(int N): tree(4*N, 0), _n(N) {}

	void update(int tl, int tr, int delta) { update(1, 0, _n - 1, tl, tr, delta); }
	void update(int i, int l, int r, int tl, int tr, int delta){
		if (tl <= l && r <= tr) tree[i] += delta;
		else if (tl > r || tr < l) {}
		else{
			int mid = (l + r) >> 1;
			update(i<<1, l, mid, tl, tr, delta);
			update(i<<1|1, mid+1, r, tl, tr, delta);
		}
	}

	int get(int pos) { return get(1, 0, _n - 1, pos); }
	int get(int i, int l, int r, int pos){
		if (l == pos && r == pos) return tree[i];
		int mid = (l + r) >> 1;
		if (pos <= mid) return tree[i] + get(i<<1, l, mid, pos);
		else return tree[i] + get(i<<1|1, mid+1, r, pos);
	}
};

struct Query{
	int l, r, c;
};

struct ParallelBinarySearch{
	int l, r;
	vector<int> q;

	ParallelBinarySearch(int L, int R): l(L), r(R) {}
};

int N, M, Q;
vector<int> res, d;
vector<vector<int>> houses;
vector<Query> qs;

void main_program(){
	cin >> M >> N;

	res.assign(M, 0);
	d.resize(M);
	houses.resize(M);

	for (int i = 0; i < N; i++){
		int x; cin >> x; x--;
		houses[x].push_back(i);
	}

	for (int i = 0; i < M; i++){
		cin >> d[i];
	}

	cin >> Q;
	qs.resize(Q);

	for (int i = 0; i < Q; i++){
		int l, r, c; cin >> l >> r >> c; l--; r--;
		qs[i] = Query{l, r, c};
	}

	vector<ParallelBinarySearch> pbs;
	
	pbs.emplace_back(0, Q);
	pbs[0].q.resize(M);
	iota(pbs[0].q.begin(), pbs[0].q.end(), 0);

	while (!pbs.empty()){
		Segtree st(N);
		vector<ParallelBinarySearch> newpbs;
		int crr = -1;

		// // DEBUG //
		// for (auto range: pbs){
		// 	cout << range.l << " -> " << range.r << ":";
		// 	for (auto i: range.q) cout << " " << i;
		// 	cout << "\n";
		// }
		// // DEBUG //

		for (auto range: pbs){
			if (range.l == range.r){
				for (auto i: range.q) res[i] = range.l;
				continue;
			}

			int mid = (range.l + range.r) >> 1;
			ParallelBinarySearch leftnode(range.l, mid), rightnode(mid+1, range.r);

			while (crr < mid){
				crr++;
				int ql = qs[crr].l, qr = qs[crr].r, qc = qs[crr].c;

				if (ql <= qr) st.update(ql, qr, qc);
				else{
					st.update(ql, N-1, qc); st.update(0, qr, qc);
				}

				// // DEBUG //
				// cout << "crr: " << crr << "\n";
				// for (int i = 0; i < N; i++) cout << st.get(i) << " \n"[i == N-1];
				// // DEBUG //
			}

			for (auto i: range.q){
				int total = 0;
				for (auto j: houses[i]){
					total += st.get(j);
				}
				if (total > d[i]) leftnode.q.push_back(i);
				else rightnode.q.push_back(i);
			}

			if (!leftnode.q.empty()) newpbs.push_back(leftnode);
			if (!rightnode.q.empty()) newpbs.push_back(rightnode);
		}

		pbs.swap(newpbs);
	}

	for (int i = 0; i < M; i++){
		if (res[i] == Q) cout << "NIE\n";
		else cout << res[i] + 1 << "\n";
	}
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 12
• Subtask 3: 0 / 12
• Subtask 4: 0 / 12
• Subtask 5: 0 / 13
• Subtask 6: 0 / 13
• Subtask 7: 0 / 13
• Subtask 8: 0 / 13