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

Output: -10526


Input: Consider Input: 2377 @ 4500 # 8359 @ 9946 # 9011

Output: -547


Input: Consider Input: 5927 @ 8254 # 3860 # 3741 # 4757 # 6571 @ 7658


Output: 2910