#include<bits/stdc++.h>
using namespace std;
const int N=100001;
char a[N];
char b[N];
int main()
{
	cin>>a;
	int n=strlen(a);
	for(int i=0;i<=n;i++)
	{
		b[i]=a[i]+a[i+1];
		if(i==n-1)
		{
			b[i]=a[0]+a[i];
		}
	}
	cout<<b;
	return 0;
}

  #include<bits/stdc++.h>
  using namespace std;
  const int N=100001;
  char a[N];
  char b[N];
  int main()
  {
  	cin>>a;
  	int n=strlen(a);
  	for(int i=0;i<=n;i++)
  	{
  		b[i]=a[i]+a[i+1]
  		if(i==n-1)
  		{
  			b[i]=a[0]+a[i];
  		}
  	}
  	cout<<b;
  	return 0;
  }