#include<bits/stdc++.h>
using namespace std;
#define db=double;
string a,b;
bool f(string a){
	for(int i=0;i<a.size()-4;i++){
		string x="";
		x=x+a[i]+a[i+1]+a[i+2]+a[i+3];
		if(x=="RIOI"||x=="rIOI"||x=="RiOI"||x=="RIoI"||x=="RIOi"||
		x=="riOI"||x=="rIoI"||x=="rIOi"||x=="RioI"||x=="RiOi"||x=="RIoi"||
		x=="rioI"||x=="riOi"||x=="rIoi"||x=="Rioi"||x=="rioi")return true;
	}
	return false;
}
int main(){
	cin>>a>>b;
	if(f(a)&&f(b))cout<<"Either is ok!";
	if(f(a)&&!f(b))cout<<b<<" for sure!";
	if(!f(a)&&f(b))cout<<a<<" for sure!";
	if(!f(a)&&!f(b))cout<<"Try again!";
	return 0;
}