In one of the games Arkady is fond of the game process happens on a rectangular field. In the game process Arkady can buy extensions for his field, each extension enlarges one of the field sizes in a particular number of times. Formally, there are n…
Palindromic characteristics of string s with length |s| is a sequence of |s| integers, where k-th number is the total number of non-empty substrings of s which are k-palindromes. A string is 1-palindrome if and only if it reads the same backward as f…
C. NP-Hard Problem time limit per test:2 seconds memory limit per test:256 megabytes input:standard input output:standard output Recently, Pari and Arya did some research about NP-Hard problems and they found the minimum vertex cover problem very int…
F. Xor-Paths time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output There is a rectangular grid of size n×mn×m. Each cell has a number written on it; the number on the cell (i,ji,j) is ai,jai,j.…