In this task you will be given an arithmetic operation and you have to find its answer. The operators '+' and '-' have been replaced with new symbols. Specifically, '+' has been replaced with the symbol '@' and '-' with the symbol '#'. You need to perform the operations in the given equation return the answer

Input: Consider Input: 4737 # 8536 @ 5633 # 1731 @ 3807 # 520 @ 1622

Output: 5012


Input: Consider Input: 4839 # 9558 @ 1236 # 8758 # 3209

Output: -15450


Input: Consider Input: 8378 @ 6962 @ 9946 @ 4623 @ 2590 # 9020 @ 3173 @ 7461


Output: 34113