#include <bits/stdc++.h>
using namespace std;

int main() {
    ios_base::sync_with_stdio(false); cout.tie(0); cin.tie(0);
    string a, b, c; cin >> a >> b >> c;
    cout << (char) toupper(a[0]) << (char) toupper(b[0]) << (char) toupper(c[0]) << endl;
}