#include <iostream>
#include <string>
#include <cctype>
using namespace std;
int main() {
    string input;
    getline(cin, input);
    string abbreviation;
    bool newWord = true;
    for (char c : input) {
        if (c == ' ') {
            newWord = true;
        } else if (newWord) {
            abbreviation += toupper(c); 
            newWord = false;
        }
    }
    cout << abbreviation << endl;
    
    return 0;
}