// editor1
#include<iostream>
using namespace std;
int main()
{
    string s1,s2;
    cin>>s1>>s2;
    for(char c:s1)if(c<'a'||c>'z'){cout<<"Invalid input";return 0;}
    for(char c:s2)if(c<'a'||c>'z'){cout<<"Invalid input";return 0;}
    if(s1.length()!=s2.length()||s1.length()<2)
    {
        cout<<"false";
        return 0;
    }
    string rot = s1.substr(2)*s1.substr(0,2);
    cout<<(rot==s2?"true":"false");
}