#include <iostream>
using namespace std;
int main()
{
int,m,k,l,s,C;
cin >> m >> l >> k >> s;
for(int i = 0; i < m; ++i)
{
 cin >> C [i];       
        
}
for(int i = 0; i < l; ++i)
{
        cin << p[i] << r[i];
        
        
}
    
    
    
}