Submission #1160177

#	Time	Username	Problem	Language	Result	Execution time	Memory
1160177		oj123	A Huge Tower (CEOI10_tower)	C++20	100 / 100	183 ms	2840 KiB

tower

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define ll long long
#define pii pair<ll, ll>
#define mll unordered_map<ll, ll>
#define endl '\n'
// #define int ll

int main() {
  int n, d;
  cin >> n >> d;
  vector<int> v(n);
  for (int i = 0; i < n; i++) {
    cin >> v[i];
  }
  sort(v.begin(), v.end());
  int l = 0;
  ll ans = 1;
  ll mod = 1e9 + 9;
  for (int r = 0; r < n; r++) {
    while (l < r and v[r] - v[l] > d) {
      l++;
    }
    int b = r - l + 1;
    ans = (ans * b) % mod;
  }
  cout << ans << endl;
}

• 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