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: 5474 @ 2497 @ 6991 @ 302 # 1963 # 6932 # 5953 # 4859

Output: -4443


Input: Consider Input: 2598 # 1930 @ 3599

Output: 4267


Input: Consider Input: 9053 # 5346 @ 4544 @ 6590 @ 5169 # 8317 @ 60


Output: 11753