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: 8929 # 6145 @ 8551 # 1836 @ 9159

Output: 18658


Input: Consider Input: 7955 # 4521 # 2426 @ 5624 @ 2050 # 6530 # 2701


Output: -549