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: 519 @ 5751 @ 8900 @ 3476 # 8727 # 9607 # 350 @ 8481

Output: 8443


Input: Consider Input: 8451 # 7523 @ 454 @ 459 @ 182 @ 6187 # 2835

Output: 5375


Input: Consider Input: 5946 # 6884 @ 7989 @ 6115 @ 446 # 7369


Output: 6243