Given A, B, C, D. Find $$$\sum\limits_{i = A}^B \sum\limits_{j = C}^D i⊕j$$$
Constraints:
1 <= A <= B <= $$$10^9$$$
1 <= C <= D <= $$$10^9$$$
How to approach this, any suggestion will be helpful?
Uber OA Question
Given A, B, C, D. Find $$$\sum\limits_{i = A}^B \sum\limits_{j = C}^D i⊕j$$$
Constraints:
1 <= A <= B <= $$$10^9$$$
1 <= C <= D <= $$$10^9$$$
How to approach this, any suggestion will be helpful?
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