How to solve part iv) w/o any of the previous parts (1 Viewer)

[MoonMonster196884]

https://boredofstudies.org/proxy.php?image=https%3A%2F%2Fscontent.xx.fbcdn.net%2Fv%2Ft1.15752-9%2F423766278_366168592980101_6449188554894858262_n.png%3Fstp%3Ddst-png_p403x403%26_nc_cat%3D104%26ccb%3D1-7%26_nc_sid%3D510075%26_nc_ohc%3DppIw3DkMiXkAX_kb9jF%26_nc_ad%3Dz-m%26_nc_cid%3D0%26_nc_ht%3Dscontent.xx%26oh%3D03_AdQifTp2NJ1Motef23OAEylxw219eQ_hm18IBO7AI3Ro1g%26oe%3D660E6749&hash=f17ffa6486e0ee6a70a7237305d30ee4

as said in the title

 

[WeiWeiMan]

copium

 

[MoonMonster196884]

copium

that's why it was so unusually hard

 

[MoonMonster196884]

Shengmei Bai is wondering if there are 4u papers as hard as Kurt and Copium.

 

[Baijehoney]

@Aeonium do u have fundamentally hard 4u papers?