#include using namespace std; typedef long long ll; #define rep(i,n) for(int i=0;i<(n);i++) #define reps(i,f,n) for(int i=(f);i<(n);i++) ll ncr(ll n, ll r) { if (n == 0 || r == 0) return 1ll; ll sum = 1; for (ll i = n - r + 1; i <= n; ++i) { sum *= i; } for (ll i = 1; i <= r; ++i) { sum /= i; } return sum; } int main(int argc, char const *argv[]) { ll n; cin >> n; if(n == 0) { printf("0\n"); return 0; } for (int i = 2; i <= 30; ++i) { for (int j = 0; j <= i - 2; ++j) { ll d0 = j, d1 = i - j; ll ans = 0; ans = ncr(d1, 2) * pow(2, d0); if (ans == n) { cout << d0 + d1 << endl; rep(d, d0) cout << "0 "; rep(d, d1) cout << "1 "; cout << endl; goto END; } } } END: return 0; }