Submission #880487

#	Time	Username	Problem	Language	Result	Execution time	Memory
880487		dubabuba	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	0 / 100	3103 ms	97856 KiB

sortbooks

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

typedef vector<int> vi;

const int mxl = 25;
const int mxn = 2e5 + 10;
vector<vi> sus(mxl, vi (mxn));
vector<vi> tmp(mxl, vi (mxn));
int a[mxn], n, m;

struct con {
	int ans, max;
	con() {ans = max = 0;}
} str[mxn * 4];

void ono_max(int &MAX, int CMP) { if(MAX < CMP) MAX = CMP;}
void ono_min(int &MIN, int CMP) { if(MIN > CMP) MIN = CMP;}

void build(int idx, int lvl, int tl, int tr) {
	if(tl == tr) {
		cout << tl << ": " << a[tl] << '\n';
		sus[lvl][tl] = a[tl];
		str[idx].max = a[tl];
		str[idx].ans = 0;
		return;
	}

	int tm = (tl + tr) / 2;
	build(idx * 2 + 1, lvl + 1, tl, tm);
	build(idx * 2 + 2, lvl + 1, tm + 1, tr);

	int L = tl, R = tm + 1, i = tl;
	while(1) {
		if(L == tm + 1 && R == tr + 1) break;
		if(L == tm + 1) {
			sus[lvl][i] = sus[lvl + 1][R];
			i++, R++;
			continue;
		}
		if(R == tr + 1) {
			sus[lvl][i] = sus[lvl + 1][L];
			i++, L++;
			continue;
		}

		if(sus[lvl + 1][L] <= sus[lvl + 1][R]) {
			sus[lvl][i] = sus[lvl + 1][L];
			L++, i++;
		}
		else {
			sus[lvl][i] = sus[lvl + 1][R];
			ono_max(str[idx].ans, str[idx * 2 + 1].max + sus[lvl][i]);
			R++, i++;
		}
	}

	ono_max(str[idx].max, str[idx * 2 + 1].max);
	ono_max(str[idx].max, str[idx * 2 + 2].max);

	ono_max(str[idx].ans, str[idx * 2 + 1].ans);
	ono_max(str[idx].ans, str[idx * 2 + 2].ans);

	// cout << tl << ' ' << tr << ":\n";
	// for(int i = tl; i <= tr; i++)
	// 	cout << sus[lvl][i] << ' ';
	// cout << "- " << str[idx].max << ' ' << str[idx].ans << '\n';
}

set<int> s;
con query(int idx, int lvl, int tl, int tr, int l, int r) {
	if(tl == l && r == tr) {
		if(s.find(lvl) == s.end()) {
			swap(sus[lvl], tmp[lvl]);
			s.insert(lvl);
		}
		return str[idx];
	}
	int tm = (tl + tr) / 2;
	if(r <= tm) return query(idx * 2 + 1, lvl + 1, tl, tm, l, r);
	if(tm < l) return query(idx * 2 + 2, lvl + 1, tm + 1, tr, l, r);

	con L_qr = query(idx * 2 + 1, lvl + 1, tl, tm, l, tm);
	con R_qr = query(idx * 2 + 2, lvl + 1, tm + 1, tr, tm + 1, r);
	con ret;

	int L = l, R = tm + 1, i = l;
	while(1) {
		if(L == tm + 1 && R == tr + 1) break;
		if(L == tm + 1) {
			tmp[lvl][i] = tmp[lvl + 1][R];
			i++, R++;
			continue;
		}
		if(R == tr + 1) {
			tmp[lvl][i] = tmp[lvl + 1][L];
			i++, L++;
			continue;
		}

		if(tmp[lvl + 1][L] <= tmp[lvl + 1][R]) {
			tmp[lvl][i] = tmp[lvl + 1][L];
			L++, i++;
		}
		else {
			tmp[lvl][i] = tmp[lvl + 1][R];
			ono_max(ret.ans, L_qr.max + tmp[lvl][i]);
			R++, i++;
		}
	}

	ono_max(ret.ans, L_qr.ans);
	ono_max(ret.ans, R_qr.ans);

	ono_max(ret.max, L_qr.max);
	ono_max(ret.max, R_qr.max);
	return ret;
}

int main() {
	cin >> n >> m;
	for(int i = 1; i <= n; i++)
		cin >> a[i];

	build(0, 0, 1, n);
	// for(int i = 1; i <= n; i++)
	// 	cout << sus[0][i] << ' ';

	while(m--) {
		int l, r, k;
		cin >> l >> r >> k;

		for(int i : s)
			swap(sus[i], tmp[i]);
		s.clear();

		con q = query(0, 0, 1, n, l, r);
		cout << (q.ans <= k) << '\n';
	}
	return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23