Submission #1264623

#	Time	Username	Problem	Language	Result	Execution time	Memory
1264623		nickolasarapidis	Monkey and Apple-trees (IZhO12_apple)	C++20	100 / 100	333 ms	137424 KiB

apple

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

class SparseSegtree {
  private:
	struct Node {
		int freq = 0;
		int lazy = 0;
		Node *left = nullptr;
		Node *right = nullptr;
	};
	Node *root = new Node;
	const int n;

	int comb(int a, int b) { return a + b; }

	void apply(Node *cur, int len, int val) {
		if (val == 1) {
			(cur->lazy) = val;
			(cur->freq) = len * val;
		}
	}

	void push_down(Node *cur, int l, int r) {
		if ((cur->left) == nullptr) { (cur->left) = new Node; }
		if ((cur->right) == nullptr) { (cur->right) = new Node; }
		int m = (l + r) / 2;
		apply(cur->left, m - l + 1, cur->lazy);
		apply(cur->right, r - m, cur->lazy);
	}

	void range_set(Node *cur, int l, int r, int ql, int qr, int val) {
		if (qr < l || ql > r) { return; }
		if (ql <= l && r <= qr) {
			apply(cur, r - l + 1, val);
		} else {
			push_down(cur, l, r);
			int m = (l + r) / 2;
			range_set(cur->left, l, m, ql, qr, val);
			range_set(cur->right, m + 1, r, ql, qr, val);
			(cur->freq) = comb((cur->left)->freq, (cur->right)->freq);
		}
	}

	int range_sum(Node *cur, int l, int r, int ql, int qr) {
		if (qr < l || ql > r) { return 0; }
		if (ql <= l && r <= qr) { return cur->freq; }
		push_down(cur, l, r);
		int m = (l + r) / 2;
		return comb(range_sum(cur->left, l, m, ql, qr),
		            range_sum(cur->right, m + 1, r, ql, qr));
	}

  public:
	SparseSegtree(int n) : n(n) {}

	void range_set(int ql, int qr, int val) { range_set(root, 0, n - 1, ql, qr, val); }

	int range_sum(int ql, int qr) { return range_sum(root, 0, n - 1, ql, qr); }
};

int main() {
	int query_num;
	cin >> query_num;
	const int RANGE_SIZE = 1e9;
	SparseSegtree st(RANGE_SIZE + 1);

	int c = 0;
	for (int i = 0; i < query_num; i++) {
		int type, x, y;
		cin >> type >> x >> y;
		if (type == 1) {
			c = st.range_sum(x + c, y + c);
			cout << c << '\n';
		} else if (type == 2) {
			st.range_set(x + c, y + c, 1);
		}
	}
}

• Subtask 1: 100 / 100