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: 3586 # 8254 # 4130 # 5426

Output: -14224


Input: Consider Input: 9844 @ 5117 @ 330


Output: 15291