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

#define rep(i,n) for(int i=0; i<(n); i++)
#define rep2(i,x,n) for(int i=x; i<(n); i++)
#define all(x) x.begin(),x.end()
typedef long long ll;
typedef unsigned long long ull;
ll mod = 1000000007;
ll inf = 1e18;
int main(){

    ull n;
    cin >> n;
    if(n%2==1) cout << 1 << endl;
    else if(n>4 && n%4==0) cout << 1 << endl;
    else cout << -1 << endl;
    
    return 0;
}