#include<iostream>
using namespace std;
int main()
{
char c;
while (cin >> c)
std::cout << char(c + 32) << endl;
return 0;
}
#include<iostream>
using namespace std;
int main()
{
char c;
while (cin >> c)
std::cout << char(c + 32) << endl;
return 0;
}