#include <iostream>
#include <string>
using namespace std;
void v(string s, int n = 0){
	if (s[n] != '\0'){
		if (s[n] >= 'a' && s[n] <= 'z' && !(n%2))
			cout <<(char) (s[n] + ('A' - 'a'));
		else
			cout << s[n];
		v(s, n + 1);
	}
}
int main(){
	string x;
	getline (cin, x);
	v(x);
	cout << endl;
	system("pause");
}