#include<iostream>
#include<string>
#include<cctype>
using namespace std;
class TextProcessor{
    private:
    static int successCount
    public:
    static bool converttoUpper(string&str){
        for (char ch: str){
            if(!isalpha()){
                return false;
            }
        }
        for (char &ch : str){
            ch = toupper(ch);
        }
            successCount++;
            return true;
        
    }
    static int getCount(){
        return successCount;
    }
};
int TextProcessor::successCount=0;
int main(){
    int n;
    cin>>n;
    cin.ignore();
    string str;
    for(int i=0;i<n;i++){
        getline(cin,str);
        if
        (TextProcessor::convertToUpper(str)){
            cout<<str<<endl;
        }else{
            cout<<"Invalid Input"<<endl;
        }
        }
        return 0;
}