""The first line contains a number M, 1 < M ≤ 14000. Then values (N integers) measured by the device follow each one in its line. There is a number −1 in the end. M ≤ N ≤ 25000. """

Limit of M is defined twice here,2nd one is correct.

I think you are wrong.
These two boundary conditions have following meaning. If N <= 14000 so M <= N, if 14000 < N <= 25000, so M <= 14000.

M ≤ N ≤ 25000 also mean that M ≤ N. (or not?)

in example m = 3

and n can be 0.

M ≤ N not correct in this case.

anyway this is has no difference for solve task, but:

need to avoid ambiguity/comfuse.

Edited by author 29.08.2012 18:03