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: 2214 @ 2042 # 8931

Output: -4675


Input: Consider Input: 6374 # 6362 # 4384 @ 4744 @ 8116 # 1470

Output: 7018


Input: Consider Input: 8259 @ 7857 @ 6719 # 7774 # 764 # 5563 # 4345 @ 4598 # 6303


Output: 2684