Submission #1285168

#	Time	Username	Problem	Language	Result	Execution time	Memory
1285168		Nipphitch	A Huge Tower (CEOI10_tower)	C++20	100 / 100	86 ms	5192 KiB

tower

#include <bits/stdc++.h>
using namespace std;
#define int long long 
const int MOD=1e9+9;

signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n,d;
    cin >> n >> d;
    vector <int> a(n);
    for(int i=0;i<n;i++) cin >> a[i];
    sort(a.begin(),a.end());
    int ans=1LL,r=0;
    for(int l=0;l<n;l++){
        while(r<n-1 && a[r+1]<=a[l]+d) r++;
        ans*=(r-l+1LL);
        ans%=MOD;
    }
    cout << ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
• Subtask 7: 5 / 5
• Subtask 8: 5 / 5
• Subtask 9: 5 / 5
• Subtask 10: 5 / 5
• Subtask 11: 5 / 5
• Subtask 12: 5 / 5
• Subtask 13: 5 / 5
• Subtask 14: 5 / 5
• Subtask 15: 5 / 5
• Subtask 16: 5 / 5
• Subtask 17: 5 / 5
• Subtask 18: 5 / 5
• Subtask 19: 5 / 5
• Subtask 20: 5 / 5