제출 #917415

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
917415		PM1	A Huge Tower (CEOI10_tower)	C++17	100 / 100	106 ms	12676 KiB

tower

#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int mxn=2e6+5,M=1e9+9;
ll n,a[mxn],ans=1,d;
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>d;
	for(int i=1;i<=n;i++)
		cin>>a[i];
	sort(a+1,a+n+1);
	int p=1;
	for(int i=1;i<=n;i++){
		while(d+a[p]<a[i])p++;
		ans=(ans*(i-p+1))%M;
	}
	cout<<ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
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• Subtask 14: 5 / 5
• Subtask 15: 5 / 5
• Subtask 16: 5 / 5
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• Subtask 19: 5 / 5
• Subtask 20: 5 / 5