// we read standard input line by line
while let line = readLine() {
// we write the line to the standard output
print(line)
}
Ly8gd2UgcmVhZCBzdGFuZGFyZCBpbnB1dCBsaW5lIGJ5IGxpbmUKd2hpbGUgbGV0IGxpbmUgPSByZWFkTGluZSgpIHsKCS8vIHdlIHdyaXRlIHRoZSBsaW5lIHRvIHRoZSBzdGFuZGFyZCBvdXRwdXQKCXByaW50KGxpbmUpCn0=