Peel away the layers - Robbers
Sisyphus's Answer, 33 layers
i=496;a=     0
print('gREETINGS!'.swapcase()if a==447775else'i=%3s;a=%6s%s'%(i-16,a+(int(1/2*2)*int('syd0s6ncczl7ka1ioletm9t1atoqjq2awpshwfxcorai94tcmzim91j2zzq2c08wxjmfmzr0x9euhjojhltjpay0g8t1o78y83a',36)&gt;&gt;i&amp;0xFFFF),open(__file__).read().strip()[14:]))

All layers are Python, in this order: 3, 3, 3, 3, 3, 2, 3, 3, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2/3 (the last layer does not matter).
Special thanks to @Riolku for helping me find the right algorithm for subset sum (because I'm bad at computer science and Google)
Since there are so many layers, writing them all as a list would be rather difficult and take me a lot of time (and anyone who wants to verify it a ton of time), so instead you can verify it by running all 33 layers with this Bash program that compiles all of the layers together.
Let me know if this posting format is invalid.