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: 7127 # 5045 # 1920 # 8991 @ 8656 # 6430 @ 8803 # 7736 @ 887

Output: -4649

Input: Consider Input: 8197 @ 9504 @ 5465 # 6573 @ 8964 @ 6026

Output: 31583

Input: Consider Input: 9473 # 3213 @ 6413 # 2987 # 6687
Output: 2999