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: 1949 @ 526 @ 1777 @ 8065 @ 2790 # 1800 # 486 @ 229 @ 7738

Output: 20788


Input: Consider Input: 7376 @ 9212 @ 1713 # 9993

Output: 8308


Input: Consider Input: 2378 @ 6894 # 3757 @ 2546 # 9399 # 2472 # 4252


Output: -8062