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: 2806 # 6120 @ 8567 @ 1946 @ 8985 # 9834 # 368 # 454 @ 5455

Output: 10983


Input: Consider Input: 9035 # 7163 # 5060 @ 6548 # 9948 @ 4280 @ 1294 @ 2934


Output: 1920