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: 4324 # 426 # 9171 # 980 @ 9454 @ 9720 # 7367 # 9266 # 1237

Output: -4949


Input: Consider Input: 6506 # 8715 @ 5800 @ 1904 @ 3642

Output: 9137


Input: Consider Input: 2974 @ 9943 @ 2956 @ 4804 @ 3230


Output: 23907