#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll mod = 1e9 + 7;
const int N = 200005;
const int INF = 0x3f3f3f3f;

int main() {
    string a, b, c;
    cin >> a >> b >> c;
    cout << (char)(a[0] - 32) << (char)(b[0] - 32) << (char)(c[0] - 32);
    return 0;
}