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: 1294 # 4752 # 8113 @ 9201 @ 8582 # 7189 @ 2849

Output: 1872


Input: Consider Input: 3825 @ 4770 @ 6345 # 5263 @ 3309 @ 4469 # 1519


Output: 15936