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: 3782 @ 4127 # 1265 # 1395 @ 2430 @ 6990 @ 8573 @ 8170

Output: 31412


Input: Consider Input: 8197 @ 9504 @ 5465 # 6573 @ 8964 @ 6026

Output: 31583


Input: Consider Input: 2119 @ 8050 # 3262 @ 23 @ 3072 # 3073 @ 9507 # 3597


Output: 12839