#include<iostream>
using namespace std;
int main(){
	int a,b,c,n,t,x;
	cin>>n;
	a=n/100;
	b=n/10%10;
	c=n%10;
	//cout<<a<<" "<<b<<" "<<c<<endl;
	
	if(a>b){
		t=a;
		a=b;
		b=t;
		
	}
	if(b>c){
		t=b;
		b=c;
		c=t;
	}
	if(a>b){
		t=a;
		a=b;
		b=t;
	}
	x=c*100+b*10+a*1;
	cout<<x<<endl;
}
/**************************************************************
	Problem: 1042
	User: admin
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/