제출 #1236180

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1236180		ssitaram	벽 (IOI14_wall)	C++20	0 / 100	111 ms	8008 KiB

wall

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

typedef long long ll;
typedef long double ld;

void up(pair<int, int>& a, int b) {
	a.first = max(a.first, b);
	if (a.first > a.second) a.second = a.first;
}

void down(pair<int, int>& a, int b) {
	a.second = min(a.second, b);
	if (a.first > a.second) a.first = a.second;
}

struct segtree {
	int n;
	vector<pair<int, int>> range;

	segtree(int sz) {
		n = 1;
		while (n < sz) n *= 2;
		range.resize(2 * n - 1);
	}

	void prop(int node, int l, int r) {
		if (r != l + 1) {
			if (range[node].first != INT32_MIN) {
				up(range[node * 2 + 1], range[node].first);
				up(range[node * 2 + 2], range[node].first);
			}
			if (range[node].second != INT32_MAX) {
				down(range[node * 2 + 1], range[node].second);
				down(range[node * 2 + 2], range[node].second);
			}
			range[node] = {INT32_MIN, INT32_MAX};
		}
	}

	void upd(int node, int l, int r, int a, int b, int h, bool u) {
		prop(node, l, r);
		if (r <= a || l >= b) return;
		if (a <= l && r <= b) {
			if (u) up(range[node], h);
			else down(range[node], h);
			return;
		}
		int m = (l + r) / 2;
		upd(node * 2 + 1, l, m, a, b, h, u);
		upd(node * 2 + 2, m, r, a, b, h, u);
	}

	void upd(int a, int b, int h, bool u) {
		upd(0, 0, n, a, b + 1, h, u);
	}

	void get(int node, int l, int r, int v[]) {
		prop(node, l, r);
		if (r == l + 1) {
			v[l] = range[node].first;
			return;
		}
		int m = (l + r) / 2;
		get(node * 2 + 1, l, m, v);
		get(node * 2 + 2, m, r, v);
	}

	void get(int v[]) {
		get(0, 0, n, v);
	}
};

void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]) {
	segtree st(n);
	for (int i = 0; i < k; ++i) {
		st.upd(left[i], right[i], height[i], (op[i] == 1));
	}
	st.get(finalHeight);
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 24
• Subtask 3: 0 / 29
• Subtask 4: 0 / 39