#include <iostream>
using namespace std;
int main()
{
int a[10],i,m;
for(m=0;m<=9;m++)
cin>>a[m];
for(i=0; i<=9; i++)
{ int b;
if(a[i]<a[i+1])
break;
else
{b=a[i];
a[i]=a[i+1];
a[i+1]=b;}
}int n;
for(n=0;n<=9;n++)
cout<<a[n];
return 0;
}