Нужна помощь игра пятнашки

Привет помогите пожалуйста убрать повторение Чисел в масивах игра пятнашки

#include <iostream>
#include <ctime>
#include <fstream>
using namespace std;
int mas1[5]{ 0,0,0,0,0 };
int mas2[5]{ 0,0,0,0,0 };
int mas3[5]{ 0,0,0,0,0 }; int r = rand() % 15;
void print()
{
    if (mas1[0] == r && mas1[1] == r && mas1[2] == r && mas1[3] == r && mas1[4] == 00)
        if (mas2[0] == r && mas2[1] == r && mas2[2] == r && mas2[3] == r && mas2[4] == r)
            if (mas3[0] == r && mas3[1] == r && mas3[2] == r && mas3[3] == r && mas3[4] == r)
                for (int i = 0; i < 5; i++) {
                    mas1[i] = r;   cout << mas1[i] << " ";
                }
    cout << endl;
    for (int i = 0; i < 5; i++) {
        cout << mas2[i] << " ";
    }
    cout << endl;
    for (int i = 0; i < 5; i++) {
        cout << mas3[i] << " ";
    }
    cout << endl;
     mas1[0] != mas1[1] != mas1[2] != mas1[3] != mas1[4] != mas2[0] != mas2[1] != mas2[2] != mas2[3] != mas2[4] != mas3[0] != mas3[1] != mas3[2] != mas3[3] != mas3[4];
};
int main()
{
    srand(time(0));
    setlocale(LC_ALL, "Russian");
      print();
           for (int i = 0; i < 5; i++)
          {
              int r = rand() % 15;
              mas1[i] = r;    print();
          }  cout << endl;
      for (int i = 0; i < 5; i++)
      {
          int r = rand() % 15;
          mas2[i] = r;
          print();
      }  cout << endl;
      for (int i = 0; i < 5; i++)
      {
          int r = rand() % 15;
          mas3[i] = r;
          print();
      }
}