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: 9504 # 5838 @ 6008 @ 5759 @ 2689

Output: 18122


Input: Consider Input: 4470 @ 7285 # 4583 @ 9451 # 3236 # 3108 # 2875

Output: 7404


Input: Consider Input: 7444 # 986 # 9514 @ 1250 # 7713 # 9682 @ 3966


Output: -15235