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: 6557 @ 9368 # 307 @ 2982 # 8398 # 9241 # 4697 # 6790

Output: -10526


Input: Consider Input: 3666 @ 1377 # 2886 @ 65 @ 817 @ 1203


Output: 4242