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

#define int long long
#define ll long long
#define fi first
#define se second
#define no "NO\n"
#define yes "YES\n"
#define pb push_back
#define endl "\n"
#define dbg(x...) do{cout<<#x<<" -> ";err(x);}while (0)

void err() { cout << '\n'; }

template<class T, class... Ts>
void err(T arg, Ts... args) {
    cout << arg << ' ';
    err(args...);
}

string d(string dividend,int divisor){
	string result;
	int shang,remainder=0;
	for(int i=0;i<dividend.size();i++){
		shang=(remainder*10+(dividend[i]-'0'))/divisor;
		remainder=(remainder*10+dividend[i]-'0')%divisor;
		result.push_back(char(shang+'0'));
	}
	while(1){
		if(result[0]=='0')
			result.erase(result.begin(),result.begin()+1);
		if(result[0]!='0') break;
	}
	return result;
}

const int N = 2e5+7;

void solve(){
	string s;
	cin >> s;
	ll cnt=1;
	while(1){
		if(s.size() == 1){
			int x =stoi(s);
			if(x>=6) cnt++;
			break;	
		} 
		s = d(s,6);
		cnt++;
	
	}
	cout << cnt ;
}
signed main(){
    ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	cin.tie(nullptr),cout.tie(nullptr);
    int T=1;
 
    //cin >> T;
    while(T--) solve();

    return 0 ;
}