#include <iostream>
#include <string>
using namespace std;

class TextProcessor{
public:
    static int count;
     static void process(string str){
         bool valid=true;
         for (int i=0;i<str.length();i++){
             if(!(str[i]>='a' && str[i] <='z'))||
                  (str[i]>='A' && str[i]<='Z'))) {
                valid=false;
                break;
                }
        }    
        if (valid){
            for(int i=0;i<str.length();i++){
                if(str[i] >='a'&& str[i]<='z') {
                    str[i]=str[i]-32;
                }
                cout<<str<<endl;
                cout++;
            }
            else{
                cout<<"Invalid input"<<endl;
            }
    }
};

int Textprocessor::count=0;

int main(){
    int n;
    cin>>n;
    string str;
    
    for(int i=0;i<n;i++) {
        cin >>str;
        TextProcessor::convert(str);
    }
    return 0;
}