#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
#define ll long long
const long long mod=998244353;
const long long hmod=46216567629137;
int main(){
    cin.tie(0)->sync_with_stdio(0);
    cout.tie(0);
    string s1,s2,s3;
    cin>>s1>>s2>>s3;
    string ans="";
    ans+=(char)(s1[0]+'A'-'a');
    ans+=(char)(s2[0]+'A'-'a');
    ans+=(char)(s3[0]+'A'-'a');
    cout<<ans<<endl;
}