#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b>>c;
	if(a<b)swap(a,b);
	if(a<c)swap(a,c);
	if(c>b)swap(c,b);
	cout<<a<<b<<c;
}
/**************************************************************
	Problem: 1040
	User: shenyue
	Language: C++
	Result: Wrong Answer
****************************************************************/