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: 6199 # 9863 # 8197 # 3975 @ 1000 @ 740 @ 3216 @ 2122 # 4226

Output: -12984


Input: Consider Input: 4039 # 2314 # 8257 # 5828 @ 2387 @ 4250 @ 5479 # 991

Output: -1235


Input: Consider Input: 3026 # 1743 @ 8446


Output: 9729