海外に落ちていた練習問題です。超簡単！
UmFyIRoHAM+QcwAADQAAAAAAAAANsnQggC0AAwMA
AAAKAAACYpt4jZO1hTAdMw0AIAAAAGNyYWNrbWUw
Mi5leGUIIVERDJ/NgSKybsTWTZJoycFSA3oMHk46
SDxZ8DWfBnBkHSR+Yflccy5MzZm7kmbmRmxYkGcH
hoJB4vFUEec4vFE0eUiKigofh/fuaIIipoScJxSL
xdTc3dk3ZkKzJux1Xk8Hiygraq6r1euqMsu9/zVV
dfD13de9dn972eq7suwou+uF7y8sHAaY5FZMlgjh
Lj8GOhoZV7rw1Yd/a+l7HMvNQ4qKUQmGqpgqnQiH
nQ4aixOeUiq8MiWnXPEvyQlECm1VVUbugUf51TFd
x8VHtFex9Ok92wt+HlyHu3lXyR6LUcPySBdTS8M1
ubr/sTYu77QrDKkyndhTUMWlt5NolDGmn6b7znIU
mbUNFNRrbylbsMmfV4l+0D+AgmK8JdhqxcZaWrQw
NjDAc/oWucaqgcscweqhAbA2jGw56fm64sJM1vpt
OmOc0NnyMf0ggiD5/qFWwpzkVI8W4/XeSyMFrBeT
6XxO57Bk2tvY+7MXKIOS1UOJwgmIi7ko/+M2R6xe
yvnJWue772yuTv2myP9bjVq+9GhIakVqOg+f0Zo9
GqMGQmL9nTtbcW3MF5r2vzJUVu6ZHTpArZjK/qj5
Y3Gs8A7BZfyUcDkMS2pKioY07ef3uNG0OPyLLNjZ
DqNpOF3ee7ZBrHGdneZ1laPRu7P6r6PN5nn8ToPR
JsK4g3tYOm/13KcygYX9CkcehzMFetK7JJcWoNTl
TX1BfrhXk0kPxzGT98x2jL0sSIdglt1MbggvEKrZ
WJqCY8CXwXCpTli8JJMs+ckLrGSWgKqHiPB8guyr
NSL9LHKGkZfaqEGtQBhMgQyp0SjZ8jHnwb4lwqcf
hQikfWIQDlj0UoeCQfctM4YZ0NAjXuScmmp0CoGk
vTsIYpEF4UKKScouAPwcimAQ9RVUp+qiIlj69U34
o5Si84KQ95PdE7FaoYrJCSEvAXE+h/hcZLZqWSnJ
nKKI8e1YmaSfhbuqqIE0OiTDFmCQkVlsPgb7fNjo
3I3UmuE6qmtQbrDwg4bLxrZ/a6ug2fIxf9nEPXsA
QAcA