#include <bits/stdc++.h>
using namespace std;
const int dx[]={1,0,0,-1,1,-1,-1,1,2,0,-2,0};
const int dy[]={0,1,-1,0,1,1,-1,-1,0,2,0,-2};
const int INF = 1<<30;
const double EPS = 1e-8;
#define PB push_back
#define mk make_pair
#define fr first
#define sc second
#define reps(i,j,k) for(int i = (j); i < (k); ++i)
#define rep(i,j) reps(i,0,j)
#define MOD 1000000007
#define lengthof(x) (sizeof(x) / sizeof(*(x)))
typedef pair<int,int> Pii;
typedef pair<int,Pii > P;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef long long ll;
int main(){
	int e;
	while(scanf("%d",&e),e){
		int ans = INF;
		rep(y,1001){
			rep(z,101){
				int Y = y*y;
				int Z = z*z*z;
				if(Y+Z > e)continue;
				ans = min(ans,e-Y-Z+y+z);
			}
		}
		printf("%d\n",ans);
	}
	return 0;
}
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <climits>
#include <cstring>

#define rep(i, m, n) for(int i=int(m);i<int(n);i++)
#define all(c) begin(c),end(c)

template<typename T1, typename T2>
inline void chmin(T1 &a, T2 b) { if (a > b) a = b; }

template<typename T1, typename T2>
inline void chmax(T1 &a, T2 b) { if (a < b) a = b; }

//改造
typedef long long int ll;
using namespace std;
#define INF (1 << 30) - 1
#define INFl (ll)5e15
#define DEBUG 0 //デバッグする時1にしてね
#define dump(x)  cerr << #x << " = " << (x) << endl
#define MOD 1000000007


//ここから編集する
class Solve {
public:
    void input() {

    }

    void solve() {
        input();
        int e;
        cin >> e;
        if (e == 0) return;

        int m = INF;
        for (int y = 0; y * y <= e; ++y) {
            for(int z = 0; z * z * z <= e; ++z){
                int x = e - y * y - z * z * z;
                if(x >= 0 && m > x + y + z) m = x + y + z;
            }
        }
        cout << m << endl;
        solve();
    }
};


int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(10);

    Solve().solve();


    return 0;
}

