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: 2269 # 7857 @ 1906 @ 1098 # 6308 # 1142 @ 2063

Output: -7971

Input: Consider Input: 2931 @ 2088 @ 4090 # 4838 # 6154 # 8570 @ 8518 @ 1737

Output: -198

Input: Consider Input: 808 # 4935 @ 288 @ 9758 @ 8690 @ 384 @ 4674 @ 5769 # 8736
Output: 16700