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: 4100 @ 4500 @ 5166 @ 7442 @ 3258

Output: 24466


Input: Consider Input: 5662 @ 7781 # 5682 @ 864 @ 6796 @ 2353 @ 1100 # 7566

Output: 11308


Input: Consider Input: 6295 # 3775 @ 259 # 6141 @ 1425 # 6680 @ 532 @ 5299


Output: -2786