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

class TextProcessor
{
    private:
    static int count;
    
    public:
    static void convertToUpper
    {
        bool valid=true;
    }
        for(int i=0;i<str.length();i++)
        {
            for(i(str[i]>='a'&& str[i]<='Z'))||(str[i]>='A'&&str[i]<='Z')
            while=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 TextProcessor::count=0;
int main(){
    int n;
    cin>>n;
    cin.ignore();
    string str;
    for(int i=0;i<n;i++){
        cin::str;
        TextProcessor::convertToUpper(str);
    }
    return 0;
}