#include<bits/stdc++.h>
using namespace std;
int _(int x)
{
    int l=0,r=1000000000,mid=0,s=0;
    while (l<=r)
    {
        mid=(l+r)/2;
        //cout<<mid<<endl;
        if(mid==x)break;
        else if(mid>x)r=mid;
        else l=mid;
        s++;
    }
    return s+1;
}
int main()
{
    int a,b,c;
    cin>>a>>b>>c;
    cout<<_(a )+_(b)+_(c);
}