B'You are given an array of n integers. For each element output the sum of itself and the previous element. For the first element, output the sum of the first and the last elements of the array. The input consists of a single line of space-separated integers. The first number is n (2 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n xe2 x80 x89 xe2 x89 xa4 xe2 x80 x8950) -- the size of the array. The following n numbers are the elements of the array (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89ai xe2 x80 x89 xe2 x89 xa4 xe2 x80 x891000). Output the sums a1 xe2 x80 x89+ xe2 x80 x89an, a2 xe2 x80 x89+ xe2 x80 x89a1, ..., an xe2 x80 x89+ xe2 x80 x89an xe2 x80 x89- xe2 x80 x891, separated with spaces.'...