#include <bits/stdc++.h>
using namespace std;
#define modulo 1000000007
#define mod(mod_x) ((((long long)mod_x+modulo))%modulo)
#define Inf 1000000000000000000

int main(){
	
	string N;
	cin>>N;
	int x;
	if(N.size()>5){
		x = stoi(N.substr(N.size()-2));
	}
	else{
		x = stoi(N);
	}
	
	if(x%4==2)cout<<-1<<endl;
	else cout<<1<<endl;
	
	return 0;
}