Submission #933631

#	Time	Username	Problem	Language	Result	Execution time	Memory
933631		tgp07	A Huge Tower (CEOI10_tower)	C++17	0 / 100	198 ms	11088 KiB

tower

#include<iostream>
#include<algorithm>
using namespace std;

typedef long long ll;

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<n && block[i]+d<=block[j]){
      j++;
    }
    ans*=(j-i);
  }
  cout<<ans<<"\n";
}

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