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: 9007 @ 6876 # 2672 # 3947 @ 6822 @ 806 @ 4508 @ 5112

Output: 26512


Input: Consider Input: 1199 # 1369 @ 4358 # 7803 @ 410 @ 1295 @ 4397 # 9436 @ 5291

Output: -1658


Input: Consider Input: 7361 # 2062 # 4608 # 3438 @ 7667 # 6196 # 9334 @ 9246 @ 225


Output: -1139