摘要：1523. K-inversionsTime limit: 1.0 second Memory limit: 64 MBConsider a permutationa1,a2, …,an(allaiare different integers in range from 1 ton). Let us callk-inversiona sequence of numbersi1,i2, …,iksuch that 1≤i1ai2>…>aik. Your task is to evaluate the number of differentk-inversions in a given 阅读全文

摘要：1350. CanteenTime limit: 1.0 second Memory limit: 64 MBIt’s dangerous to eat in a canteen — you may be poisoned by a not fresh food. One may fall into a coma because of the canteen’s chicken and the other feels OK. And vice versa. The food is cooked fromMdifferent food stuffs. There areNdifferent fo 阅读全文