#include<iostream>
#include<stdio.h>
#include<math.h>
#include<string>
#include<string.h>
using namespace std;
int main()
{


    string s6="4294967296";
    string s5="65536";
    string s4="256";
    string s3="16";
    string s2="4";
    string s1="2";
    string a;
    while(cin>>a)
    {
        if((a.length()==s6.length()&&a>=s6)||(a.length()>s6.length()))
        {
            printf("TAT\n");
        }
        else if((a.length()==s5.length()&&a>=s5)||(a.length()>s5.length())){printf("5\n");}
        else if((a.length()==s4.length()&&a>=s4)||(a.length()>s4.length())){printf("4\n");}
        else if((a.length()==s3.length()&&a>=s3)||(a.length()>s3.length())){printf("3\n");}
        else if((a.length()==s2.length()&&a>=s2)||(a.length()>s2.length())){printf("2\n");}
        else if((a.length()==s1.length()&&a>=s1)||(a.length()>s1.length())){printf("1\n");}
        else if(a=="1") printf("0\n");
        else if(a=="0") printf("TAT\n");
    }
    return 0;


}