#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef string str;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    str s;
    cin >> s;
    cout << (char)toupper(s[0]);
    cin >> s;
    cout << (char)toupper(s[0]);
    cin >> s;
    cout << (char)toupper(s[0]);
    return 0;
}