#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(b<c){
		swap(b,c);
	}	
cout<<a<<b<<c;	
	
}

/**************************************************************
	Problem: 1040
	User: chenyaohuo
	Language: C++
	Result: Wrong Answer
****************************************************************/