A. Book Reading time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Recently Luba bought a very interesting book. She knows that it will take t seconds to read the book. Luba wants to finish r…
B. Japanese Crosswords Strike Back time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output A one-dimensional Japanese crossword can be represented as a binary string of length x. An encoding of thi…
A. Tennis Tournament 题目连接: http://www.codeforces.com/contest/628/problem/A Description A tennis tournament with n participants is running. The participants are playing by an olympic system, so the winners move on and the losers drop out. The tourname…
A. Tricky Sum Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/598/problem/A Description In this problem you are to calculate the sum of all integers from 1 to n, but you should take all powers of two with minus in the sum.…
B. New Skateboard 题目连接: http://www.codeforces.com/contest/628/problem/A Description Max wants to buy a new skateboard. He has calculated the amount of money that is needed to buy a new skateboard. He left a calculator on the floor and went to ask som…
A. Book Reading time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Recently Luba bought a very interesting book. She knows that it will take t seconds to read the book. Luba wants to finish r…
You are given two integers n and k. Find k-th smallest divisor of n, or report that it doesn't exist. Divisor of n is any such natural number, that n can be divided by it without remainder. Input The first line contains two integers n and k (1 ≤ n ≤ …
