Submission #856339


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#define _CRT_SECURE_NO_WARNINGS
#include<sstream>
#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<climits>
#include<cmath>
#include<string>
#include<vector>
#include<set>
#include<map>
#include<queue>
#include<numeric>
#include<functional>
#include<algorithm>
#include<bitset>
#include<tuple>
#include<unordered_set>
#include<random>
using namespace std;
#define INF (1<<29)
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(v) v.begin(),v.end()
#define uniq(v) v.erase(unique(all(v)),v.end())




vector<tuple<int, int, int>> s[2][100000];
int N;
int x[100000];
int L, Q;
int ans[100000];
int dist[100000];

int bs;


void solve(int dir) {
	rep(i, N - 1) {
		int nxt = upper_bound(x, x + N, x[i] + L) - 1 - x;
		if (s[dir][i].size() < bs) {
			for (const auto &t : s[dir][i]) {
				int b, j, cost;
				tie(b, j, cost) = t;
				if (nxt >= b) {
					ans[j] = cost + 1;
				}
				else {
					s[dir][nxt].emplace_back(b, j, cost + 1);
				}
			}
		}
		else {
			int c = 1, d = 0;
			dist[i] = 0;
			for (int j = i + 1; j < N; j++) {
				d += x[j] - x[j - 1];
				if (d > L) {
					d = x[j] - x[j - 1];
					c++;
				}
				dist[j] = c;
			}
			for (const auto &t : s[dir][i]) {
				int b, j, cost;
				tie(b, j, cost) = t;
				ans[j] = cost + dist[b];
			}
		}
		{
			vector<tuple<int, int, int>> a;
			s[dir][i].swap(a);
		}
	}
}





int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> N;
	rep(i, N)cin >> x[i];
	cin >> L >> Q;
	bs = sqrt(Q);
	rep(i, Q) {
		int a, b;
		cin >> a >> b;
		a--; b--;
		if (a < b) {
			s[0][a].emplace_back(b, i, 0);
		}
		else {
			a = N - a - 1;
			b = N - b - 1;
			s[1][a].emplace_back(b, i, 0);
		}
	}
	solve(0);
	reverse(x, x + N);
	rep(i, N)x[i] *= -1;
	solve(1);
	rep(i, Q)cout << ans[i] << endl;

	return 0;
}

Submission Info

Submission Time
Task E - Tak and Hotels
User hirokazu1020
Language C++14 (GCC 5.4.1)
Score 700
Code Size 1902 Byte
Status AC
Exec Time 1279 ms
Memory 9524 KB

Judge Result

Set Name Sample Subtask1 All
Score / Max Score 0 / 0 200 / 200 500 / 500
Status
AC × 1
AC × 14
AC × 27
Set Name Test Cases
Sample example_01.txt
Subtask1 example_01.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt
All example_01.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask2_01.txt, subtask2_02.txt, subtask2_03.txt, subtask2_04.txt, subtask2_05.txt, subtask2_06.txt, subtask2_07.txt, subtask2_08.txt, subtask2_09.txt, subtask2_10.txt, subtask2_11.txt, subtask2_12.txt, subtask2_13.txt
Case Name Status Exec Time Memory
example_01.txt AC 11 ms 4992 KB
subtask1_01.txt AC 11 ms 4992 KB
subtask1_02.txt AC 10 ms 4992 KB
subtask1_03.txt AC 18 ms 4992 KB
subtask1_04.txt AC 18 ms 4992 KB
subtask1_05.txt AC 17 ms 4992 KB
subtask1_06.txt AC 14 ms 4992 KB
subtask1_07.txt AC 14 ms 4992 KB
subtask1_08.txt AC 17 ms 4992 KB
subtask1_09.txt AC 18 ms 4992 KB
subtask1_10.txt AC 21 ms 4992 KB
subtask1_11.txt AC 18 ms 4992 KB
subtask1_12.txt AC 18 ms 4992 KB
subtask1_13.txt AC 17 ms 4992 KB
subtask2_01.txt AC 1279 ms 9032 KB
subtask2_02.txt AC 1238 ms 8576 KB
subtask2_03.txt AC 1230 ms 8996 KB
subtask2_04.txt AC 437 ms 7168 KB
subtask2_05.txt AC 530 ms 7680 KB
subtask2_06.txt AC 739 ms 8448 KB
subtask2_07.txt AC 857 ms 9088 KB
subtask2_08.txt AC 1175 ms 8576 KB
subtask2_09.txt AC 1196 ms 8576 KB
subtask2_10.txt AC 1176 ms 9088 KB
subtask2_11.txt AC 1164 ms 8448 KB
subtask2_12.txt AC 802 ms 9524 KB
subtask2_13.txt AC 659 ms 9048 KB