Submission #1005712

#	Time	Username	Problem	Language	Result	Execution time	Memory
1005712		tgp07	A Huge Tower (CEOI10_tower)	C++17	100 / 100	166 ms	11092 KiB

tower

#include<iostream>
#include<algorithm>
using namespace std;
 
typedef long long ll;
 
const ll MOD=1e9 + 9;
int main(){
  ll n,d;
  cin>>n>>d;
  
  ll block[n];
  for(ll i=0;i<n;i++){
    cin>>block[i];
  }
  
  sort(block,block+n);
  
  ll ans=1;
  ll j=0;
  for(ll i=0;i<n;i++){
    while(j<i && block[j]+d<block[i]){
      j++;
    }
    ans=((ans*(i-j+1))%MOD)%MOD;
  }
  cout<<ans<<"\n";
}

• 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