#include <iostream>
#include <string>
using namespace std;
int main ()
{
string a;
while (getline (cin,a))
{
string pierwsze,nowy;
int ile=0;
while (a[ile]!=' ')
{
pierwsze+=a[ile];
a.erase(ile,1);
}
if (a[0]==' ')
a.erase(0,1);
for (int i=0;i<pierwsze.length();i++)
{
nowy+=pierwsze[i];
while (a[0]!=' ')
{
nowy+=a[0];
a.erase(0,1);
}
if (a[0]==' ')
{
nowy+=a[0];
a.erase(0,1);
}
}
cout<<nowy<<endl;
nowy.clear();
pierwsze.clear();
}
}
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