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: 5891 @ 5687 @ 6434 # 9679 @ 2950 # 5934 @ 1364 @ 6773

Output: 13486


Input: Consider Input: 1767 @ 7166 @ 1543 @ 1185 @ 9966 # 6628

Output: 14999


Input: Consider Input: 4433 # 7785 @ 1368


Output: -1984