#include using namespace std; #define int long long #define rep(i,s,n) for(int i = s;i=(s);i--) #define all(v) (v).begin(),(v).end() #define pb push_back #define fi first #define se second #define chmin(a,b) a=b #define chmax(a,b) a=b typedef long long ll; typedef pairpint; typedef vectorvint; typedef vectorvpint; typedef pair P1; typedef pair P2; typedef pairPP; static const ll maxLL = (ll)1 << 62; const ll MOD=1000000007; const ll INF=1e18; int dx[]={0,0,1,-1}; int dy[]={-1,1,0,0}; int N; signed main(){ cin.tie(0); ios::sync_with_stdio(false); cin>>N; int ans=INF; for(int i=1;i*i*i<=N;i++){ if(N%i==0){ for(int j=1;j*j<=N/i;j++){ if(N/i%j==0){ chmin(ans,(i-1)+(j-1)+(N/i/j)-1); } } } } cout<