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: 6348 # 2614 @ 3559 @ 9670 # 1137 # 9684

Output: 6142


Input: Consider Input: 1277 # 3822 @ 5064 @ 3615 # 7107 # 5691 @ 1554 # 6525 @ 714

Output: -10921


Input: Consider Input: 3843 @ 8044 # 5312


Output: 6575