#include <bits/stdc++.h>
using namespace std;

vector<int> dp(300001, 1e9);
vector<vector<int>> prv(300001);

string Ans = "2";
void dfs(int N, vector<int>& v, int last){
    if(N == 0){
        deque<int> use[2];
        // for(int a : v) cerr << a << " ";
        // cerr << endl;
        for(int a : v) use[a%2].push_back(a);
        for(int k=0; k<2; k++) sort(use[k].begin(), use[k].end());
        string ans;
        bool onetop = false;
        for(int i : use[1]) for(int j=0; j<i; j++) ans.push_back('0' + j%2);
        while(use[0].size()){
            int num;
            if(onetop){
                num = use[0].back(); use[0].pop_back();
            }else{
                num = use[0].front(); use[0].pop_front();
            }
            for(int j=0; j<num; j++) ans.push_back('0' + (j+onetop)%2);
            onetop = !onetop;
        }
        Ans = min(ans, Ans);
    }else{
        for(int a : prv[N]) if(last <= a){
            v.push_back(a);
            dfs(N-a*a, v, a);
            v.pop_back();
        }
    }
}

int main(){
    int N;
    cin >> N;
    dp[0] = 0;
    for(int i=0; i<N; i++) for(int j=1; i+j*j<=N; j++){
        if(dp[i+j*j] > dp[i] + j){
            dp[i+j*j] = dp[i] + j;
            prv[i+j*j] = {j};
        }else if(dp[i+j*j] >= dp[i] + j){
            prv[i+j*j].push_back(j);
        }
    }
    vector<int> v;
    dfs(N, v, 0);
    cout << Ans << endl;
    return 0;
}