# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
884333 | AndreiBOTO | A Huge Tower (CEOI10_tower) | C++14 | 235 ms | 18012 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <iostream>
#include <vector>
#include <bits/stdc++.h>
using namespace std;
const int NMAX=1e6+5;
const int MOD=1e9+9;
#define int long long
vector<int>v;
int best[NMAX];
signed main()
{
int n,d,i,j;
long long ans=1;
cin>>n>>d;
for(i=0;i<n;i++)
{
int x;
cin>>x;
v.push_back(x);
}
sort(v.begin(),v.end());
for(i=0;i<n;i++)
best[i]=upper_bound(v.begin(),v.end(),v[i]+d)-v.begin();
for(i=0;i<n;i++)
{
ans*=(1LL*best[i]-i);
ans%=MOD;
}
cout<<ans;
return 0;
}
Compilation message (stderr)
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