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: 9049 # 6438 @ 8686 # 910 # 3586

Output: 6801


Input: Consider Input: 8041 @ 762 @ 8091 @ 6500

Output: 23394


Input: Consider Input: 3648 @ 8353 # 763 @ 2637


Output: 13875