#define _GLIBCXX_DEBUG #include using namespace std; using ll = long long; #define rep(i, n) for (ll i = 0; i < (ll)(n); i++) int INF = (1 << 30); long long INFLL = (1LL << 62); int main(){ string n; cin>>n; ll nsize=n.size(); if(n=="2"){ cout<<0<