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: 5604 # 514 # 150 @ 4349 @ 958 # 6247 # 8710

Output: -4710


Input: Consider Input: 643 @ 9262 # 6489 @ 1803 @ 6271

Output: 11490


Input: Consider Input: 6669 # 4936 # 7980


Output: -6247