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: 9161 # 6658 @ 4795 @ 5621 # 1895 # 3766 # 7738 # 570

Output: -1050


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

Output: -2965


Input: Consider Input: 1936 # 4603 # 3339 # 4741 @ 1956


Output: -8791