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: 1916 @ 5847 @ 4371

Output: 12134


Input: Consider Input: 6769 @ 8080 @ 7730 @ 8491 # 9684 @ 5831 @ 8742


Output: 35959