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: 837 @ 118 @ 1503 # 3288 @ 6669 # 1394

Output: 4445


Input: Consider Input: 1718 # 8860 # 9652

Output: -16794


Input: Consider Input: 2083 @ 5327 @ 1523 @ 8852 @ 4370


Output: 22155