#include<bits/stdc++.h>
using namespace std;
int s1,s2,s3,a[10001],maxn,sum,ans=1000000;
int main()
{
	freopen("bones.in","r",stdin);
    freopen("bones.out","w",stdout);
	cin>>s1>>s2>>s3;
	for (int i=1;i<=s1;i++)
	 for (int j=1;j<=s2;j++)
	  for (int k=1;k<=s3;k++)
	   {
        sum=i+j+k;
	   	a[sum]++; 
	   }
	for (int i=10000;i>=1;i--)
	{
 
        if (a[i]>=maxn)
	    {
	  	maxn=a[i]; 
	  	ans=i;
        }

	}   
	cout<<ans<<endl;
	return 0; 
}