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: 5235 @ 3917 @ 4902 @ 3831 # 6517

Output: 11368


Input: Consider Input: 3615 @ 7429 @ 6810 # 207 @ 1232 # 5621 @ 6745

Output: 20003


Input: Consider Input: 7787 @ 3092 # 3153 # 9152 @ 2142 # 1655


Output: -939