#include <bits/stdc++.h>
using namespace std;
///529
int x,n;
int fr[10], a[10];
int main()
{
  int i, aux;
  cin>>n;
  for(int i=1; i<=n; i++)
    {cin>>x;
     if(x==0) fr[0]++;
     while(x!=0)
     {
         fr[x%10]++; ///frecv pe cifre
         x/=10;
     }

    }
  for(i=0;i<=9;i++) a[i]=i;
  ///sortare cresc
   bool  ord=0;
   while(ord==0)
   {
       ord=1;
       for(i=0;i<9;i++)
        if(fr[i]>fr[i+1])
       {
           aux=fr[i];fr[i]=fr[i+1]; fr[i+1]=aux;
           aux=a[i];a[i]=a[i+1];a[i+1]=aux;
           ord=0;
       }
       else if(fr[i]==fr[i+1] && a[i]>a[i+1])
       {
           aux=a[i];a[i]=a[i+1];a[i+1]=aux;
           ord=0;
       }
   }

   for(i=0;i<=9;i++)
    if(fr[i]) cout<<a[i]<<' ';
  return 0;
}