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: 8929 # 6145 @ 8551 # 1836 @ 9159

Output: 18658


Input: Consider Input: 5837 # 1015 # 4725

Output: 97


Input: Consider Input: 2787 @ 3800 # 142 # 7750 # 8581 @ 5447 @ 1512 @ 6550


Output: 3623