#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;
typedef long long ll;
const int N = 2000086, MOD = 998244353, INF = 0x3f3f3f3f;
ll res;
int n, m, cnt, w[N];


int main() {
	string s;
	for (int i = 0; i < 3; i++) {
		cin >> s;
		putchar(s[0] - 32);
	}
	return 0;
}