#include <iostream>
#include <string>
using namespace std;
int main()
{
int n,oneCount=0,twoCount=0,threeCount=0;
cin>>n;
for(int i=0;i<n;i++)
{
int input;
cin>>input;
switch(input)
{
case 1:
oneCount++;
break;
case 2:
twoCount++;
break;
case 3:
threeCount++;
break;
}
}
for(int i1=0;i1<oneCount;i1++)
{
cout<<"1"<<" ";
}
for(int i2=0;i2<twoCount;i2++)
{
cout<<"2"<<" ";
}
for(int i3=0;i3<threeCount;i3++)
{
cout<<"3"<<" ";
}
return 0;
}