제출 #850877

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
850877		tvladm2009	A Huge Tower (CEOI10_tower)	C++17	100 / 100	93 ms	11464 KiB

tower

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int M = (int) 1e9 + 9;
int n;
int d;

int mul(int a, int b) {
  return a * (ll)b % M;
}

int main() {
  ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

  cin >> n >> d;
  vector<int> v;
  for (int i = 1; i <= n; i++) {
    int x;
    cin >> x;
    v.push_back(x);
  }
  sort(v.begin(), v.end());
  int j = (int) v.size() - 1;
  int ret = 1;
  for (int i = (int) v.size() - 2; i >= 0; i--) {
    while (v[i] + d < v[j]) {
      j--;
    }
    ret = mul(ret, j - i + 1);
  }
  cout << ret << "\n";
  return 0;
}

• 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