#include <iostream>
using namespace std;
int main() {
int a,b,c,d;
cin>>a>>b>>c>>d;
if(a+b<=d && c>d)
cout<<"Shuttle";
else if(a+b>d && c<=d)
cout<<"Walk";
else if(a+b<=d && c<=d)
cout<<"~.~";
else
cout<<"T.T";
return 0;
}
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