Epic Transformation Solution Codeforces Round #710 Div. 3
You are given an array aa of length nn consisting of integers. You can apply the following operation, consisting of several steps, on the array aa zero or more times: you select two different numbers in the array aiai and ajaj; you remove ii-th and jj-th elements from the array. For example, if n=6n=6 and a=[1,6,1,1,4,4]a=[1,6,1,1,4,4], then you can perform the following sequence of operations: select i=1,j=5i=1,j=5. The array aa becomes equal to [6,1,1,4][6,1,1,4]; select i=1,j=2i=1,j=2. The … Read more
