#include<bits/stdc++.h>
using namespace std;
#define rep(i,y,t) for(int i = y;i<=t;i++)
#define rap(i,m,n) for(int i = n,i>=m;i--)
const int N = 1e6+10;
long long last[N],u[N],w[N];
long long  p[N];
int main() {
	long long n,a,b,s = 0;
	while(cin>>n){
		if(n == 0){
			return 0;	
		}	
		s = 0;
		while(n>3){
			if(n%3 != 0) n = n/3+1;
			else n/=3;
			s++;			
		}
		s++;
		cout<<s<<endl;
	}
	return 0;
}