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: 4460 @ 9143 # 6720 # 8379 @ 1636 # 6526

Output: -6386


Input: Consider Input: 1774 # 6033 # 3757 @ 3570 @ 6463 # 5537

Output: -3520


Input: Consider Input: 7083 @ 2706 @ 5111 @ 6825 @ 8625


Output: 30350