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

class TextProcessor{
    public:
    static int count;
    
    static bool valid(string s){
        for(char c:s)
        if(!isalpha(c) && c!='')
        return false;
        return true;
    }
static void convert(string s){
    if(!valid(s)){
        cout<<"Invalid input\n";
        return;
    }
    for(char &c:s)c+toupper(c);
    cout<<s<<"\n";
    count++;
}
};
int TextProcessor::cout=0;
int main(){
    int n;
    cin>>n;
    cin.ignore();
    
    while(n--){
        string s;
        getline(cin,s);
        TextProcessor::convert(s);
    }
}