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: 3651 @ 4392 @ 7612 # 1575 @ 8307

Output: 22387


Input: Consider Input: 1774 # 6033 # 3757 @ 3570 @ 6463 # 5537

Output: -3520


Input: Consider Input: 488 @ 17 # 9237 # 4381 @ 7620 @ 8159 @ 6229 @ 8259 # 669


Output: 16485