RU-ALLRUSSIAN 1986 Problem 12
An n x n x n cube is divided into unit cubes. Show that we can assign a different integer to each unit cube so that the sum of each of the rows parallel to an edge is zero.
Dataset text NuminaMath olympiads. Quoted with source.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.