#include using namespace std; #define fi first #define se second #define pb push_back using vi = vector ; using ll = long long; using pii = pair ; //~ const ll mod = 998244353; const ll mod = 1e9 + 7; ll qpow(ll a, ll b, ll m = mod) { ll r = 1, t = a; for(; b; b /= 2) { if(b & 1) r = r * t % m; t = t * t % m; } return r; } int main() { ios :: sync_with_stdio(false); string s; cin >> s; s = "00" + s; int x = stoi(s.substr(s.size() - 2)); if(x % 4 != 2) cout << 1 << '\n'; else cout << -1 << '\n'; }