#include<iostream>
#include<string>
using namespace std;
class text{
    private:
    static int count;
    public:
    static void ctu(string str){
        bool valid=true;
        for (int i=0;i<str.length();i++){
            if(!salpha(str[i])){
                valid=false;
                break;
            }
        }
        if(valid){
            for(int i=0;iMstr.length();i++){
                str[i]=toupper(str[i]);
            }
            cout<<str<<endl;
            count++;
        }
        else{
            cout<<"Invalid input"<<endl;
        }
    }
    static int getcount(){
        return count;
    }
};
int text::count=0;
int main(){
    int n;
    cin>>n;
    cin.ignore();
    string str;
    for(int i=0;i<n;i++){
        getline(cin,str);
        text::ctu(str);
        
    }
    return 0;
}