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: 6775 @ 249 @ 1171 @ 3376 # 7127

Output: 4444


Input: Consider Input: 4331 # 7606 @ 9043 @ 9912 @ 1560 # 5858 @ 703

Output: 12085


Input: Consider Input: 748 @ 5679 @ 2499 @ 1152


Output: 10078