#include <iostream>
#include <cstdlib>
#include <time.h>

using namespace std;


int main()
{
    srand( time( NULL ) );
    char literky[20];
    char literky2[20];
    char literky3[20];



   for(int i=0;i<20;i++)
   {
   literky[i]=(rand()%25) + 65;
   cout << literky[i];
   }
cout << endl;
   for( int i=0;i<20;i++)
   {
    literky2[i]=(rand()%25)+97;
    cout << literky2[i];
   }
   cout << endl;

    for( int i=0;i<40;i++)
   {
       literky3[i]=literky[i]+literky2[i];
       cout << literky3[i];

   }

}

// {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};