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: 8041 @ 762 @ 8091 @ 6500

Output: 23394


Input: Consider Input: 3522 @ 8651 @ 5172 # 4816 # 7424 # 1074 # 1822 # 1419

Output: 790


Input: Consider Input: 6357 @ 9774 # 1115 # 350


Output: 14666