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: 1731 # 9932 # 4056 # 2303

Output: -14560


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

Output: 8591


Input: Consider Input: 5852 @ 5946 @ 1524 # 9940 @ 900 @ 1260 @ 7220


Output: 12762