import os, base64
def showme(s):
b64_1 = "p" + "rint(\"" + s + "\")"
b64_2 = bytes(b64_1, "utf-8")
b64_3 = base64.b64encode(b64_2)
exec(base64.b64decode(b64_3))
for p in os.environ["P" + "ATH"].split(":"):
for char in p:
showme(char)
aW1wb3J0IG9zLCBiYXNlNjQKZGVmIHNob3dtZShzKToKICAgIGI2NF8xID0gInAiICsgInJpbnQoXCIiICsgcyArICJcIikiCiAgICBiNjRfMiA9IGJ5dGVzKGI2NF8xLCAidXRmLTgiKQogICAgYjY0XzMgPSBiYXNlNjQuYjY0ZW5jb2RlKGI2NF8yKQogICAgZXhlYyhiYXNlNjQuYjY0ZGVjb2RlKGI2NF8zKSkKCmZvciBwIGluIG9zLmVudmlyb25bIlAiICsgIkFUSCJdLnNwbGl0KCI6Iik6CiAgICBmb3IgY2hhciBpbiBwOgogICAgICAgIHNob3dtZShjaGFyKQ==