#include <iostream>
#include <cstring>
using namespace std;
 
const int MAX_LENGTH = 100;
 
int main() {
	char array[MAX_LENGTH];
	cin.getline(array, MAX_LENGTH);
	int length = strlen(array);
	int counter = 0;
//	cout << array;
	for (int i = 0; i < length; ++i) {
		if (array[i] >= 'A' && array[i] <= 'Z') {
			//cout <<  array[i]   << ",";
			array[i] = (char)(array[i] + 32);
		}
		//cout << (char)(array[i] - 32)   << ",";
	}
	cout << array;
	return 0;
}

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