Last week I found a difficult problem. In standard input there are two numbers A and B. I need to output sum A + B. I solve this problem
A, B = map(int, input().split()) ANS = 0 for i in range(A): ANS += 1 for i in range(B): ANS += 1 print(ANS)
But then I found more difficult problem. In this problem A can be < 0. Please help me with this difficult problem. upd: Now I know how to solve this problem, but it works very slow. I have heard about solution O(B). Does anybody know it?