Neural Ninjas · DSA Simulation Labs · Lab 51

🪙 The Coin Change Tree

Every branch tries one more coin against whatever's left. Hit exactly zero, and that branch is a genuine way to make change — it turns green. Go negative even by one cent, and the branch withers on the spot — gray, dead, never explored further.

Branch Log

Controls

🌳 BranchI try every coin from my current one onward — never backward, so I never count the same combination twice in a different order.
🥀 WitherThe instant a branch goes negative, I stop it cold. There's no reason to explore any further down a path that's already failed.
Pick a level above to begin.