#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a,b,c,m = 0,z = 0;
	cin>>a>>b>>c;
	if(a<b)
	{
		int t=a;
		a=b;
		b=t;
	}
	if(a<c)
	{
		int t=a;
		a=c;
		c=t;
	}
    int q = a * 10 + c * 1 + b;
	cout<<q;
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a,b,c;
	cin>>a>>b>>c;
	if(a<b) //保证a>=b 
	{
		int t=a;
		a=b;
		b=t;
	}
	if(a<c) //保证a>=c 
	{
		int t=a;
		a=c;
		c=t;	
	}
	int res=a*10+b+c;
	cout<<res;
	return 0;
}