#include <iostream>
using namespace std;

class TextProcessor{
public:
    static int count;
     static void convert(string str){
            for(char c:str) {
                if(!isalpha(c)) {
                    cout << "Invalid input" <<endl;
                    return;
                }
            }
            for(char &c : str)
                c=toupper(c);
                cout<<str<<endl;
                cout++;
            }
};

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;
}