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

int main (){
    int n;
    cin>>n;
    while(n--){
        string s;
        cin>>s;
        bool valid=true;
        for(char c : s){
            valid=false;
            break;
        }
    }
    if(!valid) cout<<"Invald input"<<endl;
    else{
        for(char &c : s)c=toupper(c);
        cout<<s<<endl;
    }
}
return 0;
}