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: 353 # 9525 @ 9923 @ 4025 # 1922 @ 4751

Output: 7605


Input: Consider Input: 4324 # 426 # 9171 # 980 @ 9454 @ 9720 # 7367 # 9266 # 1237

Output: -4949


Input: Consider Input: 4117 # 3380 # 4784


Output: -4047