#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
#include <map>
#define ll signed long long
using namespace std;
const ll MOD = (ll)10e9 + 9;
int main()
{
cin.tie(0);
cout.tie(0);
ios_base::sync_with_stdio(0);
//freopen("tower.in", "r", stdin);
ll N;
ll D;
cin >> N >> D;
vector<ll> blocks(N, 0);
for (ll i = 0; i < N; i++)
{
cin >> blocks[i];
}
sort(blocks.begin(), blocks.end(), greater<ll>());
vector<ll> place(N, 1);
ll j = 0;
for (ll i = 0; i < N; i++)
{
while (j < N && blocks[i] - blocks[j] <= D)
{
j++;
}
place[i] = j - i
}
vector<ll> count(N, 1);
for (ll i = N - 2; i >= 0; i--)
{
count[i] = (count[i + 1] * place[i]) %= MOD;
}
cout << ((count[1] * place[0]) % MOD);
}
Compilation message
tower.cpp: In function 'int main()':
tower.cpp:41:25: error: expected ';' before '}' token
41 | place[i] = j - i
| ^
| ;
42 | }
| ~
tower.cpp:47:49: error: lvalue required as left operand of assignment
47 | count[i] = (count[i + 1] * place[i]) %= MOD;
| ^~~
