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: 7757 # 4475 @ 6447 # 2209 # 9966

Output: -2446


Input: Consider Input: 9835 @ 3285 # 8713 # 3066

Output: 1341


Input: Consider Input: 4159 # 7823 # 7937 @ 5352 @ 3257


Output: -2992