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: 8603 @ 6832 @ 2275 # 7856

Output: 9854


Input: Consider Input: 5027 @ 4058 # 8225 @ 9216 # 3101 @ 8259 # 2376 # 6826 # 8997

Output: -2965


Input: Consider Input: 2321 # 9653 # 6557 # 826 @ 9901


Output: -4814