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: 4071 # 2406 @ 1349 @ 5528 @ 7426 @ 2448 # 1981 # 7844

Output: 8591


Input: Consider Input: 1185 # 6431 @ 1326 # 2840 # 9276

Output: -16036


Input: Consider Input: 7231 @ 3617 @ 4750


Output: 15598