from sys import stdin
for line in stdin:
n = int(line)
if n == 42:
break
print(n)
import sys
print(sys.version)
ZnJvbSBzeXMgaW1wb3J0IHN0ZGluCgpmb3IgbGluZSBpbiBzdGRpbjoKCW4gPSBpbnQobGluZSkKCWlmIG4gPT0gNDI6CgkJYnJlYWsKCXByaW50KG4pCgppbXBvcnQgc3lzCnByaW50KHN5cy52ZXJzaW9uKQo=