// NOTE: it is recommended to use this even if you don't understand the following code.


#include <iostream>
#include <string>


using namespace std;

int main() {
    // uncomment the two following lines if you want to read/write from files
    // ifstream cin("input.txt");
    // ofstream cout("output.txt");

    int A;
    cin >> A;

    int B;
    cin >> B;

    int C;
    cin >> C;

    int K = 0;


    if(A=B){
        if(B=C){
            K=1;
        }
        else{
            K=3;
        }
    }
    else{
      if(A=C){
        if(C=B){
            K=1;
        }
        else{
            K=3;
        }
      }
      else{
        if(B=C){
            if(C=A){
                K=1;
            }
            else{
                K=3;
            }
        }
        else{
            K=6;
        }
      }
    }

    cout << K << endl;

    return 0;
}