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: 5891 @ 5687 @ 6434 # 9679 @ 2950 # 5934 @ 1364 @ 6773

Output: 13486


Input: Consider Input: 8678 @ 7424 # 7399 @ 4601 @ 9327 @ 7787 @ 2286

Output: 32704


Input: Consider Input: 8519 @ 6026 @ 9811 # 3345 # 4285 # 1345 # 8456


Output: 6925