# Time Capsule
> You neither need 35 years nor even 20 years to solve this problem!
## Challenge
The goal is basically to compute `l = pow(2, pow(2, t), n)`.
Note that `pow(2, x, n) = pow(2, x % phi(n), n)`
`n` is easily factored with yafu, and the calculation is trivial from there
> Flag : `CCTF{_______________________________________________Happy_Birthday_LCS______________________________________________}`