제출 #573484

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
573484		lam	A Huge Tower (CEOI10_tower)	C++17	100 / 100	122 ms	14028 KiB

tower

#include <bits/stdc++.h>
#define taskname "truth"
#define int long long
#define maxn 110
using namespace std;
int n,d;
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
//    freopen(taskname".in","r",stdin);
//    freopen(taskname".out","w",stdout);
    cin>>n>>d;
    vector <int> a;
    for (int i=1; i<=n; i++)
    {
        int x; cin>>x;
        a.push_back(x);
    }
    sort(a.begin(),a.end());
    int r=0;
    int ans=1ll;
    int mod=1e9+9;
    for (int l=0; l<n; l++)
    {
        while (r<n-1&&a[r+1]-a[l]<=d) r++;
        int temp=r-l+1;
        ans=(ans*temp)%mod;
    }
    cout<<ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
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• Subtask 20: 5 / 5