#include <iostream>
#include <algorithm>
using namespace std;

int main () 
{
    long long a, b, c;
    cin>>a>>b>>c;
    long long d[5];
    d[0]=a+b+c;
    d[1]=2*a+2*b;
    d[2]=2*a+2*c;
    d[3]=2*b+2*c;
    sort (d, d+4);
    cout<<d[0];

    return 0;
}