/* Demonstrasi karakter dan string */
#include <stdio.h>
#include <iostream>
#include <string.h>
using namespace std;
int main(){
string str;
cin >> str;
for(int i = 0; i < str.length(); i++)
str[i] = tolower(str[i]);
cout << str << '\n';
}
ICAvKiBEZW1vbnN0cmFzaSBrYXJha3RlciBkYW4gc3RyaW5nICovCiAgCiAgI2luY2x1ZGUgPHN0ZGlvLmg+CiAgI2luY2x1ZGUgPGlvc3RyZWFtPgogICNpbmNsdWRlIDxzdHJpbmcuaD4KICB1c2luZyBuYW1lc3BhY2Ugc3RkOwogIAogIGludCBtYWluKCl7CiAgCSAgc3RyaW5nIHN0cjsKICAJICBjaW4gPj4gc3RyOwogIAkgIGZvcihpbnQgaSA9IDA7IGkgPCBzdHIubGVuZ3RoKCk7IGkrKykKICAJICAgICAgc3RyW2ldID0gdG9sb3dlcihzdHJbaV0pOwogIAkgICAgICAKICAJICBjb3V0IDw8IHN0ciA8PCAnXG4nOwogIH0=