涅槃phy的专栏

DescriptionAn array of size n ≤ 106is given to you. There is a sliding window of sizek which is movingfrom the very left of the array to the very right. You can only see theknumbers in the windo

DescriptionSome of Farmer John's N cows (1 ≤ N ≤80,000) are having a bad hair day! Since each cow is self-conscious about hermessy hairstyle, FJ wants to count the number of other cows that can see