palindrome

#include<iostream>
#include<string>

using namespace std;

int main(){

    long long int t,j,d,sum=0,l;
    cin>>t;;


    for(int i=1;i<=t;i++){

        string s,r;
        cin>>s;

        int k=0;
        int l = s.length();
        for(int j=l-1;j>=0;j--){

            r[k]=s[j];
            k++;
        }



        if(s.compare(r)==0)  cout<<"Case "<<i<<": yes"<<endl;
        else cout<<"Case "<<i<<": no"<<endl;


    }




    return 0;
}