Submission #1329871

#	Time	Username	Problem	Language	Result	Execution time	Memory
1329871		boclobanchat	A Huge Tower (CEOI10_tower)	C++20	100 / 100	85 ms	5156 KiB

tower

#include<bits/stdc++.h>
using namespace std;
const int MAXN=1e6+5;
const long long mod=1e9+9;
long long A[MAXN];
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n,d;
    cin>>n>>d;
    for(int i=1;i<=n;i++) cin>>A[i];
    sort(A+1,A+n+1);
	long long r=1,ans=1;
	for(int i=1;i<=n;i++)
	{
		while(A[i]-A[r]>d) r++;
		ans=ans*(i-r+1)%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