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: 9551 @ 4169 # 3026 @ 616 # 5398 # 6695 # 5831 # 898 # 1255

Output: -8767


Input: Consider Input: 7757 # 4475 @ 6447 # 2209 # 9966

Output: -2446


Input: Consider Input: 4284 # 7688 # 5782 @ 1591 @ 7755 # 2704 # 9042


Output: -11586