#include <iostream>
#include <array>
#include <cstdlib>
#include <ctime>

using namespace std;
int main(void)
{
  array<array<int,20>,10>image;
  srand(time(NULL));
  float a=0;

  for(int x=0;x<10;x++){
    for(int y=0;y<20;y++){
      image[x][y]=rand()%256;
      image[x][y]+=30;
      if(image[x][y]>255)
    {
      image[x][y]=255;
    }
      if(image[x][y]>=120){
    cout<<"X";
      }
      else{
    cout<<".";
    a++;
      }
    }
    cout<<endl;
  }
  a=(a/200.0)*100.0;
  cout<<a<<"%"<<endl;




  return 0;
}