Y by Adventure10, Mango247
It is given sequence wih length of
which consists of first
positive integers in arbitrary order (every number occus exactly once). Let us consider a first term from sequence, let it be
. From given sequence we form a new sequence of length 2017, such that first
elements of new sequence are same as first
elements of original sequence, but in reverse order while other elements stay unchanged. Prove that if we continue transforming a sequence, eventually we will have sequence with first element
.





