#include "bits/stdc++.h" using namespace std; typedef long long ll; typedef unsigned long long ull; typedef vector veci; typedef vector vecs; template using Hash=unordered_map; #define REP(i, a, n) for(ll i = a; i < n; i++) #define RREP(i, a, n) for(ll i = n-1; i >= a; i--) #define rep(i, n) REP(i, 0, n) #define rrep(i, n) RREP(i, 0, n) #define MD 1000000007 template T read(){T a;cin >> a;return a;} template void read(T& a){cin >> a;} template void rarr(T a, int n){for(int i = 0; i < n; i++) {cin >> a[i];}} template void write(T a){cout << a << endl;} template void writes(vector a, const char* c = " "){cout << a[0];for(int i = 1; i < (int)a.size(); i++)cout << c << a[i];cout << endl;;} void write(double a){cout << fixed << setprecision(12) << a << endl;} void write(long double a){cout << fixed << setprecision(12) << a << endl;} template void warr(T a, int n, const char* c = " "){cout << a[0];for(int i = 1; i < n; i++)cout << c << a[i];cout << endl;} void split(string s, string delim, veci& result){result.clear();string::size_type pos = 0;while(pos != string::npos){string::size_type p = s.find(delim, pos);if(p == string::npos){result.push_back(atoi(s.substr(pos).data()));break;}else {result.push_back(atoi(s.substr(pos, p - pos).data()));}pos = p + delim.size();}} void split(string s, string delim, vecs& result){result.clear();string::size_type pos = 0;while(pos != string::npos){string::size_type p = s.find(delim, pos);if(p == string::npos){result.push_back(s.substr(pos));break;}else {result.push_back(s.substr(pos, p - pos));}pos = p + delim.size();}} ll gcd(ll a, ll b){while(true){ll k = a % b;if(k == 0)return b;a = b;b = k;}} ll comb(ll n, ll m){ll p=1;m=min(m,n-m);for(ll i=1;i<=m;i++){p*=n-i+1;p/=i;}return p;} ll max_div(ll n,double k){ ll sn=pow(n,k)+0.000002; for(ll i=sn;i>=1;i--){ if(n%i==0)return i; } return 1; } ll f(ll* a){ return a[0]+a[1]+a[2]-3; } int main(void) { ll n; ll a[3]; Hash h[3]; cin>>n; a[0]=max_div(n,1.0/3.0); a[1]=max_div(n/a[0],0.5); a[2]=n/a[0]/a[1]; rep(i,3){ ll t=a[i]; for(ll j=2;j*j<=a[i];){ if(t%j!=0){ j++; continue; } h[i][j]++; t/=j; } if(t!=1)h[i][t]++; } ll res=f(a); rep(i,3){ int j=(i+1)%3; int k=(i+2)%3; for(auto at:h[i]){ REP(x,1,at.second+1){ ll b[3]={a[0],a[1],a[2]}; ll c[3]={a[0],a[1],a[2]}; ll y=pow(at.first,x); //write(res); b[j]*=y;b[i]/=y; res=min(res,f(b)); c[k]*=y;c[i]/=y; res=min(res,f(c)); } } } //cout<