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: 3298 @ 1140 @ 3407 # 8200 # 7383 # 6043 @ 5264

Output: -8517


Input: Consider Input: 7773 @ 3264 # 8041 @ 4068 # 5476 # 5946 # 8987 # 7719

Output: -21064


Input: Consider Input: 2105 # 6835 @ 6437 # 5582 @ 7185 # 1237


Output: 2073


