#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;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8YWxnb3JpdGhtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4gKCkgCnsKICAgIGxvbmcgbG9uZyBhLCBiLCBjOwogICAgY2luPj5hPj5iPj5jOwogICAgbG9uZyBsb25nIGRbNV07CiAgICBkWzBdPWErYitjOwogICAgZFsxXT0yKmErMipiOwogICAgZFsyXT0yKmErMipjOwogICAgZFszXT0yKmIrMipjOwogICAgc29ydCAoZCwgZCs0KTsKICAgIGNvdXQ8PGRbMF07CgogICAgcmV0dXJuIDA7Cn0g