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: 2738 # 5562 @ 4529 @ 5438 @ 1799

Output: 8942


Input: Consider Input: 8280 # 2607 # 4185 # 9243 @ 9839

Output: 2084


Input: Consider Input: 4284 # 8233 @ 2781 # 2769 # 5560 @ 635 # 1706 @ 1965 @ 6794


Output: -1809