#include<iostream>
using namespace std;string s,s1;
int main()
{
    int n;cin>>n>>s>>s1;
    for(int i=1;i<=n;i++)
    s1=s1+s,s=s+s1;cout<<s;
    return 0;
}

#include<iostream>
using namespace std;string s,s1;
int main()
{
    int n;cin>>n>>s>>s1;
    for(int i=1;i<=n;i++)
    s1=s1+s,s=s+s1;cout<<s;
    return 0;
}