Submission #9715720


Source Code Expand

#pragma region
#include <iostream>
#include <string>
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <vector>
#include <map>
#include <queue> 
#include <stack>
#include <set>
#include <list>

using namespace std;
typedef long long ll;
//#define rep(i, s, e) for (int(i) = (s); (i) < (e); ++(i))
#define rep(i, e) for (int(i) = 0; (i) < (e); ++(i))
#define all(x) x.begin(),x.end()
#pragma endregion


int main()
{
	int n, d; cin >> n >> d;
	vector<ll> x(n);
	rep(i, n)cin >> x[i];
	ll res = 0;
	for (int i = 1; i < n - 1; ++i)
	{
		ll left, right;
		left = lower_bound(all(x), x[i] - d) - x.begin();
		left = i - left;
		right = upper_bound(all(x), x[i] + d) - x.begin();
		right -= i + 1;
		res += left*right;
	}
	rep(i, n - 2)
	{
		ll right;
		right = upper_bound(all(x), x[i] + d) - x.begin();
		right -= i + 1;
		res -= right * (right - 1) / 2;
	}
	cout << res << endl;
}

Submission Info

Submission Time
Task C - 徒歩圏内
User shimarut
Language C++14 (GCC 5.4.1)
Score 400
Code Size 937 Byte
Status AC
Exec Time 55 ms
Memory 1024 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 4
AC × 16
Set Name Test Cases
Sample sample-01.txt, sample-02.txt, sample-03.txt, sample-04.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, sample-01.txt, sample-02.txt, sample-03.txt, sample-04.txt
Case Name Status Exec Time Memory
01.txt AC 53 ms 1024 KB
02.txt AC 55 ms 1024 KB
03.txt AC 48 ms 1024 KB
04.txt AC 53 ms 1024 KB
05.txt AC 53 ms 1024 KB
06.txt AC 50 ms 1024 KB
07.txt AC 42 ms 1024 KB
08.txt AC 41 ms 896 KB
09.txt AC 1 ms 256 KB
10.txt AC 50 ms 1024 KB
11.txt AC 53 ms 1024 KB
12.txt AC 49 ms 1024 KB
sample-01.txt AC 1 ms 256 KB
sample-02.txt AC 1 ms 256 KB
sample-03.txt AC 1 ms 256 KB
sample-04.txt AC 1 ms 256 KB