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: 9786 @ 7240 # 8099 @ 100 @ 4573 @ 5982 @ 9270 @ 9911 # 8249

Output: 30514


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

Output: -547


Input: Consider Input: 6368 @ 9565 # 7042 # 1940 # 9960


Output: -3009