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

const ll mod = 1000000007;
const int INF = 1001001001;

int main(){
    string s; cin >> s;
    int sz = s.length();
    int tmp;
    if(sz > 1) tmp = ((s[sz - 1] - '0') + (s[sz - 2] - '0') * 10);
    else tmp = s[sz - 1] - '0';
    if((s[sz - 1] - '0') % 2 == 0){
            if(tmp % 4 == 0) cout << 1 << endl;
            else cout << - 1 << endl;
        }
    else{
        if(tmp % 4 == 1) cout << 1 << endl;
        else cout << -1 << endl;
    }
        
}