#include <iostream>
#include <cctype>
#include <algorithm>
#include <locale>
using namespace std;

int main() {
	
	string a, b, c;
	cin >> a >> b >> c;
	a = toupper(a[0]);
	b = toupper(b[0]);
	c = toupper(c[0]);
	cout << a << b << c << endl;
	
}