#include <bits/stdc++.h>
using namespace std;

int main() {
	int arr[]={1,1,2,2};
	int n=sizeof(arr)/sizeof(arr[0]);
	int frequency;
	int maxFrequency=0;
	for(int i=0;i<n;i++){
		frequency=0;
		int element=arr[i];
		for(int j=0;j<n;j++){
			if(arr[j]==element)
				frequency++;
		}
		maxFrequency=max(frequency, maxFrequency);
	}
	cout<<n-maxFrequency;
	return 0;
}