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: 2611 @ 6783 @ 8407 # 5813 @ 4138

Output: 16126


Input: Consider Input: 2370 # 437 # 89 # 6625 # 2724 @ 1767 # 2848 @ 3753

Output: -4833


Input: Consider Input: 3230 # 9900 # 1591 # 8129 # 3815 # 5585 # 2206 @ 7881


Output: -20115