Submission #690725

#	Time	Username	Problem	Language	Result	Execution time	Memory
690725		Nuraly_Serikbay	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	13 / 100	570 ms	46984 KiB

sortbooks

/* Speech to the young */
 
//#include <bits/stdc++.h>
#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <algorithm>
#include <stdio.h>
#include <fstream>
#include <unordered_map>
 
using namespace std;
 
#define pb push_back
#define all(x) x.begin(),x.end()
#define F first
#define S second
#define YOSIK() ios_base::sync_with_stdio(0),cin.tie(0)
#define int long long
#define pans cout << "\n------ans-------\n" 
 
const int N = 1e6 + 10;
const int INF = 1e18 + 7;
const int MOD = 1e9 + 7;
const int P = 31;
 
int n, m, t[N * 4];
int a[N], pref[N], res[N], l[N], r[N], k[N];
int pos[1005], sp[N][20], lg[N];
vector <int> qu[N]; 

int get (int l, int r) {
	int val = lg [r - l + 1];
	return max (sp[l][val], sp[r - (1 << (val)) + 1][val]);
}

void Solution () {
	cin >> n >> m;
	int mn = INF, mx = 0;
	for (int i = 1; i <= n; ++ i) {
		cin >> a[i];
		mx = max (mx, a[i]);
		mn = min (mn, a[i]);
		pref[i] = pref[i - 1];
		if (i > 1 && a[i] < a[i - 1]) pref[i] ++; 
	}
	int ok = 0;
	if (mx <= 1000) {
		sp[1][0] = a[1];	
		for (int i = 2; i <= n; ++ i) sp[i][0] = a[i], lg[i] = lg[i / 2] + 1;
		for (int pw = 1; pw <= lg[n]; ++ pw) {
			for (int i = 1; i + (1 << (pw)) - 1 <= n; ++ i) {
				sp[i][pw] = max (sp[i][pw - 1], sp[i + (1 << (pw - 1))][pw - 1]);
			}
		}
		
		for (int i = 1; i <= m; ++ i) {
			cin >> l[i] >> r[i] >> k[i];
			qu[r[i]].pb (i);
		}
		for (int i = 1; i <= n; ++ i) {
			pos[a[i]] = i;
			for (auto to: qu[i]) {
				ok = 0;
				for (int j = 1; j <= 1000; ++ j) {
					if (get (l[to], pos[j]) > j && get (l[to], pos[j]) + j > k[to]) {
						ok = 1;
						break;
					}
				}
				res[to] = 1 - ok;
			}
		}
		for (int i = 1; i <= m; ++ i) cout << res[i] << '\n';
		return;
	}
	set <int> s;
	for (int i = 1; i <= m; ++ i) {
		int l, r, k;
		cin >> l >> r >> k;
		if (k < mn) {
			if (pref[r] - pref[l] > 0) cout << 0 << '\n';
			else cout << 1 << '\n';
		} else {
			ok = 0;
			s.clear();
			for (int j = r; j >= l; -- j) {
				auto it = s.lower_bound (a[j]);
				if (it == s.begin()) {
					s.insert(a[j]);
					continue;
				}
				it --;
				if (*(it) + a[j] > k) {
					ok = 1;
					break;
				}
				s.insert (a[j]);
			}
			cout << (ok ? "0\n" : "1\n");
		}
		
	}
	return;
}
 
signed main () {
	YOSIK();
//	precalc();
	int T = 1; 
	//cin >> T;
	while (T --) Solution ();
	exit (0);
}

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