제출 #1336928

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1336928		hokhaiinn	A Huge Tower (CEOI10_tower)	C++20	100 / 100	85 ms	2628 KiB

tower

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using pii = pair<int, int>;
using vvi = vector<vi>;
using str = string;
using vl = vector<ll>;
using vp = vector<pii>;
using vs = vector<str>;
#define st first
#define nd second
#define pb push_back
#define eb emplace_back
#define nn '\n'

static const int _ = []() {
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    return 0;
}();

int main(){
    int n, d;
    cin >> n >> d;
    vi a(n);
    for (int i = 0; i < n; ++i){
        cin >> a[i];
    }
    sort(a.begin(), a.end());
    int l, r;
    l = r = 0;
    ll ans = 1;
    for (int l = 0; l < n; ++l){
        while (r < n - 1 && a[r + 1] <= a[l] + d){
            ++r;
        }
        ans = ans * (r - l + 1) % ((ll)1e9 + 9);
    }
    cout << ans;
    return 0;
}

• Subtask 1: 5 / 5
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• Subtask 20: 5 / 5