Redddy's Devlog

Kolya got an integer array a1,a2,…,an The array can contain both positive and negative integers, but Kolya doesn't like 0, so the array doesn't contain any zeros. Kolya doesn't like that the sum of some subsegments of his array can be 0. The subsegment is some consecutive segment of elements of the array. You have to help Kolya and change his array in such a way that it doesn't contain any subse..

One day three best friends Petya, Vasya and Tonya decided to form a team and take part in programming contests. Participants are usually offered several problems during programming contests. Long before the start the friends decided that they will implement a problem if at least two of them are sure about the solution. Otherwise, the friends won't write the problem's solution. This contest offer..