#include #include #include #include #include #include using namespace std; typedef long long lng; #define UP(i,a,b) for(int i=(a); i<=(b); ++i) #define DOWN(i,b,a) for(int i=(b); i>=(a); --i) #define REP(i,n) UP(i,0,(n)-1) #define ALL(a) (a).begin(), (a).end() #define UNIQUE(a) a.erase(unique(ALL(a)), a.end()) //NOTE: must be sorted in advance lng power(lng b, int n) {lng sol=1; while(n>0) {if(n&1) {sol=sol*b;} n>>=1; b*= b;} return sol;} //calculate b^n in O(log(n)) time const int MOD = 1000000007; //10^9+7 const double PI = 3.1415926535897932384626; /*********** variables ************/ int K; /**********************************/ int main() { cin.tie(0); ios::sync_with_stdio(false); cin >> K; if(K == 0) { cout << 1 << endl; cout << 0 << endl; return 0; } UP(k, 2, 30) { lng sol = k * (k - 1) / 2; int m = 0; while(m + k <= 30) { if(sol == K) { cout << k + m << endl; cout << 1; REP(i, k-1) cout << " 1"; REP(i, m) cout << " 0"; cout << endl; return 0; } ++m; sol *= 2; } } }