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: 4956 # 4259 # 3459

Output: -2762


Input: Consider Input: 5027 @ 4058 # 8225 @ 9216 # 3101 @ 8259 # 2376 # 6826 # 8997

Output: -2965


Input: Consider Input: 8135 # 8456 # 1620 @ 6223 # 4684 @ 9224 # 788


Output: 8034