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: 6915 @ 3564 # 9197 # 9440 # 1112 @ 382 @ 9681 # 6512 # 9658

Output: -15377


Input: Consider Input: 6597 @ 1596 # 358 # 9057 @ 993

Output: -229


Input: Consider Input: 4734 # 8751 # 8592 @ 4724 @ 314 @ 2488


Output: -5083