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: 1296 @ 9756 @ 2493 @ 9940 # 5147 # 5428 # 5741 # 828

Output: 6341


Input: Consider Input: 3438 # 3865 # 956 # 3020 @ 2696

Output: -1707


Input: Consider Input: 2574 # 1870 @ 9723 # 8807 # 4611


Output: -2991