[cf 599A]Patrick and Shopping

#include <iostream>

using namespace std;

int main()
{
    long long    a,b,c,Ans=0x7fffffff;

    cin >> a >> b >> c;
    Ans=min(Ans,a+a+b+b);
    Ans=min(Ans,a+c+b);
    Ans=min(Ans,a+c+c+a);
    Ans=min(Ans,b+c+c+b);
    cout << Ans << endl;
    return 0;
}