#include<iostream>
#include<string>
#include<cctype>
using namespace std;
class Name
{
    private:
    static int count;
    public:
    
    static void convertToUpper(string str)
    {
        bool valid = true;
        
        for(int i=0;i<str.length();i++)
        {
            for(!((str[i]>= 'a' && str[i]<='z')) || (str[i]>='A' && str[i]))
            {
            valid = false;
            break;
        }
        
    if(valid)
    {
        for(int i = 0;i<str.length(); i++)
        {
            str[i] = toupper(str[i]);
        }
        cout<<str<<endl;
        count++;
    }
    else
    {
        cout<<"Invalid input"<<endl;
    }
}
};

int Name::count = 0;

int main()
{
    int n;
    cin>>n;
    cin.ignore();
    
    string str;
    
    for(int i = 0; i<n; i++)
    {
        getline(cin, str);
        Textprocessor::convertToUpper(str);
    }
    return 0;
};