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: 2404 @ 4359 # 5006 # 2796 # 6139

Output: -7178


Input: Consider Input: 1278 @ 4628 @ 2357 @ 3694 @ 5775 @ 8542 # 793

Output: 25481


Input: Consider Input: 8944 # 8419 # 6181 # 8555 @ 1419 @ 481 @ 7025 @ 4984


Output: -302