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: 4364 # 2781 # 7674 # 4801 @ 898 @ 7562 @ 5925 @ 648 @ 7768

Output: 11909


Input: Consider Input: 5968 # 833 # 9263 @ 5675 @ 3262 # 2158

Output: 2651


Input: Consider Input: 102 @ 919 # 3999


Output: -2978