#include using namespace std; #define REP(i,n) for(int i=0; i<(int)(n); i++) #define FOR(i,b,e) for (int i=(int)(b); i<(int)(e); i++) #define ALL(x) (x).begin(), (x).end() const double PI = acos(-1); const int INF = 1<<20; int dp[300000+1]; int pr[300000+1]; int main() { ios_base::sync_with_stdio(0); cin.tie(0); int n; cin >> n; fill(dp, dp+n+1, INF); dp[0] = 0; for (int i = 1; i <= n; i++) { for (int j = 1; j * j <= i; j++) { if (dp[i - j * j] + j < dp[i]) { dp[i] = dp[i - j * j] + j; pr[i] = j; } } } vector ls; while (n > 0) { ls.push_back(pr[n]); n -= pr[n] * pr[n]; } sort(ls.begin(), ls.end()); string s = "0"; REP (i, ls.size()) { if (ls[i] % 2) { s += s.back(); REP (j, ls[i]-1) s += '0' + '1' - s.back(); } } for (int i = ls.size() - 1; i >= 0; i--) { if (ls[i] % 2 == 0) { s += s.back(); REP (j, ls[i]-1) s += '0' + '1' - s.back(); } } cout << s.substr(1) << endl; return 0; }