#include <iostream>
#include <cstring>
using namespace std;
string s;
int main()
{
	cin >> s;
	char c[s.length()];
	for (int i = 0; i < s.length(); i++) c[i] = s[i];
	if (c[0] >= 97 && c[0] <= 122) c[0] -= 32;
	cout << c[0];
	for (int i = 1; i < s.length(); i++)
	{
		if (c[i] >= 65 && c[i] <= 90) c[i] += 32;
		cout << c[i];
	}
	return 0;
}