geuioerhaiogh

#include <iostream>
#include <fstream>
#include <cmath>
#include <math.h>


using namespace std;

int a[4];
int cnt = 1;
int mx = -1;

int main() {

 	for(int i = 0; i < 4; i++){
 		cin >> a[i];
 	}
 	mx = a[0];
 	if(a[1] == mx ){
 		cnt = cnt + 1;
 		mx = a[1];
 	if(a[2] == mx && a[3] == mx){
 		cnt = cnt + 2;
 	}
 	else if(a[2] == mx || a[3] == mx){
 		cnt = cnt + 1;
 	}
 	}

 	else if(a[2] == mx ){
 		cnt = cnt + 1;
 		mx = a[2];
    if(a[3] == mx){
 		cnt = cnt + 1;
 	}

}
else if(a[3] == mx){
 		cnt = cnt + 1;
 	}
 	cout << 4 - cnt;
}