RU-ALLRUSSIAN 1982 Problem 11
is a permutation of 1, 2, ..., 1982. If , we swap and . Then if (the new) we swap and . And so on. After 1981 potential swaps we have a new permutation . We then compare and . If , we swap them. We then compare and (the new) . So we arrive finally at . We find that . What value is ?
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.