Submission #1288235

#	Time	Username	Problem	Language	Result	Execution time	Memory
1288235		blackscreen1	Wall (IOI14_wall)	C++20	100 / 100	667 ms	214196 KiB

wall

#include <bits//stdc++.h>
#include "wall.h"
using namespace std;
#define ll int
#define iloop(m, h) for (auto i = m; i != h; i += (m < h ? 1 : -1))
#define INF INT_MAX/2
struct node {
	ll s, e, m, l1, l2;
	node *l, *r;
	node (ll S, ll E) {
		s = S, e = E, m = (S+E)>>1;
		l1 = 0, l2 = INF;
		if (s != e) {
			l = new node(s, m);
			r = new node(m+1, e);
		}
	}
	void prop() {
		if (s != e) {
			l->l2 = min(l->l2, l2);
			l->l1 = max(min(l->l1, l2), l1);
			r->l2 = min(r->l2, l2);
			r->l1 = max(min(r->l1, l2), l1);
			l1 = 0, l2 = INF;
		}
	}
	void upd1(ll S, ll E, ll V) {
		prop();
		if (s == S && e == E) {
			l1 = max(l1, V);
			return;
		}
		if (E <= m) l->upd1(S, E, V);
		else if (S > m) r->upd1(S, E, V);
		else l->upd1(S, m, V), r->upd1(m+1, E, V);
	}
	void upd2(ll S, ll E, ll V) {
		prop();
		if (s == S && e == E) {
			l2 = min(l2, V);
			l1 = min(l1, V);
			return;
		}
		if (E <= m) l->upd2(S, E, V);
		else if (S > m) r->upd2(S, E, V);
		else l->upd2(S, m, V), r->upd2(m+1, E, V);
	}
	ll qu(ll X) {
		prop();
		if (s == e) return l1;
		if (X <= m) return l->qu(X);
		return r->qu(X);
	}
} *root = new node(0, 2e6);
void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
	iloop(0, k) {
		if (op[i] == 1) root->upd1(left[i], right[i], height[i]);
		else root->upd2(left[i], right[i], height[i]);
		//cout << i << endl;
		//iloop(0, n) cout << root.qu(i).first << " ";
		//cout << endl;
	}
	iloop(0, n) finalHeight[i] = root->qu(i);
}

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