#include using namespace std; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define req(i,n) for(int i = 1;i <= n; i++) #define rrep(i,n) for(ll i = n-1;i >= 0;i--) #define ALL(obj) begin(obj), end(obj) #define RALL(a) rbegin(a),rend(a) typedef long long ll; typedef long double ld; template inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } const ll INF = 1e18; ll mod = 1e9+7; bool isPrime(int x){ int i; if(x < 2)return 0; else if(x == 2) return 1; if(x%2 == 0) return 0; for(i = 3; i*i <= x; i += 2) if(x%i == 0) return 0; return 1; } int main(){ int n;cin >>n; if(n==0||n==1)cout << n<