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: 1884 @ 3670 # 3893 @ 782 @ 3288 # 7463 @ 3214

Output: 1482


Input: Consider Input: 4612 @ 9447 # 3444 @ 1269

Output: 11884


Input: Consider Input: 5618 # 5417 @ 162 # 7064 # 2214 @ 8575


Output: -340