Submission #393553

#	Time	Username	Problem	Language	Result	Execution time	Memory
393553		aaronhma	A Huge Tower (CEOI10_tower)	C++17	85 / 100	1091 ms	5068 KiB

tower

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef string str;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<ll> vll;
typedef vector<char> vc;
typedef vector<str> vstr;
typedef vector<vi> vvi;
typedef pair<int, int> pii;
typedef vector<pii> vpii;

#define f first
#define s second
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define PB push_back
#define sz(x) (int)x.size()
#define rtn return
#define rsz resize
#define ins insert
#define ft front()
#define bk back()
#define LB lower_bound
#define UB upper_bound
#define BINS binary_search
#define READ(x) ifstream cin(x ".in");
#define OUT(x) ofstream cout(x ".out");
#define IT(x) for (auto it = begin(x); it != end(x); it++)
#define RIT(x) for (auto it = rbegin(x); it != rend(x); it++)
#define FORE(i, a, b) for (ll i = a; i < b; i++)

const int MOD = 1e9 + 9; // 19^9 + 9 for "CEOI 2010 - A Huge Tower"

const int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};

// Returns ceil(a / b) (b != 0)
int ceildiv(int a, int b)
{
  rtn a / b + !(a < 0 || a % b == 0);
}

// INPUT
template <class T>
void read(T &x) { cin >> x; }
template <class Arg, class... Args>
void read(Arg &first, Args &...rest);

template <class T>
void read(complex<T> &x);
template <class T1, class T2>
void read(pair<T1, T2> &p);
template <class T>
void read(vector<T> &a);
template <class T, size_t SZ>
void read(array<T, SZ> &a);

template <class Arg, class... Args>
void read(Arg &first, Args &...rest)
{
  read(first);
  read(rest...);
}
template <class T>
void read(complex<T> &x)
{
  T a, b;
  read(a, b);
  x = cd(a, b);
}
template <class T1, class T2>
void read(pair<T1, T2> &p) { read(p.f, p.s); }
template <class T>
void read(vector<T> &a)
{
  FORE(i, 0, sz(a))
  read(a[i]);
}
template <class T>
void read(vector<T> &a, int n)
{
  FORE(i, 0, n)
  read(a[i]);
}

int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);

  ll n, d, ans = 1;
  read(n, d);

  vll arr(n);
  read(arr);

  sort(all(arr));

  FORE(i, 0, n) {
    ll j = i;

    while (j < n && arr[j] - arr[i] <= d)
      j++;

    ans = (ans * (j - i)) % MOD;
  }

  cout << ans << "\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
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• Subtask 10: 5 / 5
• Subtask 11: 5 / 5
• Subtask 12: 5 / 5
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• Subtask 14: 5 / 5
• Subtask 15: 5 / 5
• Subtask 16: 5 / 5
• Subtask 17: 5 / 5
• Subtask 18: 0 / 5
• Subtask 19: 0 / 5
• Subtask 20: 0 / 5