#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3;
	cin >> s1 >> s2 >> s3 ;
	cout << ((char)s1[0] - 'a' + 'A');
	cout << ((char)s2[0] - 'a' + 'A');
	cout << ((char)s3[0] - 'a' + 'A');
	
}