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// bai 1
#include <iostream>
#include <math.h>

using namespace std;

int main()
{
  int n;
  cout << "Nhap so luong phan tu\n";
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++)
  {
    cin >> a[i];
  }
  for (int i = 0; i < n - 1; i++)
  {
    cout << a[i] * 1ll * a[i + 1] << " ";
  }
}
// bai 2
#include <iostream>
#define ll long long
#define MOD 1000000007
using namespace std;

int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n;
  cin >> n;
  int a[n], b[n]; // mang b la mang luu so luong phan tu moi
  for (int &i : a)
    cin >> i;
  int res = -1e9, cnt = 0;
  for (int i = n - 1; i >= 0; i--)
  {
    if (a[i] > res)
    {
      res = a[i];
      b[cnt++] = res;
    }
  }
  for (int i = cnt - 1; i >= 0; i--)
    cout << b[i] << " ";
}
// bai 3
#include <bits/stdc++.h> // thu vien tong hop(khong phai thu vien chuan cua c++)
#define ll long long
#define MOD 1000000007
using namespace std;

int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++)
  {
    cin >> a[i];
  }
  int demChan = 0, demLe = 0;
  long long tongChan = 0, tongLe = 0;
  for (int i = 0; i < n; i++)
  {
    if (a[i] % 2 == 0)
    {
      ++demChan;
      tongChan += a[i];
    }
    else
    {
      ++demLe;
      tongLe += a[i];
    }
  }
  cout << "\nSo luong so chan\n"
       << demChan;
  cout << "\nSo luong so le\n"
       << demLe;
  cout << "\nTong so chan\n"
       << tongChan;
  cout << "\nTong so le\n"
       << tongLe;
}
// bai 4
#include <bits/stdc++.h> // thu vien tong hop(khong phai thu vien chuan cua c++)
#define ll long long
#define MOD 1000000007
using namespace std;

int cnt[1000007]; // mang danh dau

int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++)
  {
    cin >> a[i];
    cnt[a[i]]++; // danh dau cac gia tri trong mang a
  }
  for (int i = 0; i < n; i++)
  {
    if (cnt[a[i]] != 0)
    {
      cout << a[i] << " " << cnt[a[i]] << endl;
      cnt[a[i]] = 0;
    }
  }
}
// bai 5
#include <bits/stdc++.h> // thu vien tong hop(khong phai thu vien chuan cua c++)
#define ll long long
#define MOD 1000000007
using namespace std;

int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int n;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++)
  {
    cin >> a[i];
  }
  for (int i = 0; i < n; i++)
  {
    if (a[i] == 79)
    {
      for (int j = i; j < n - 1; j++)
      {
        a[j] = a[j + 1];
      }
      --n;
      --i;
    }
  }
  if (n == 0)
  {
    cout << "EMPTY\n";
  }
  else
  {
    for (int i = 0; i < n; i++)
    {
      cout << a[i] << " ";
    }
  }
}