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: 6374 # 6362 # 4384 @ 4744 @ 8116 # 1470

Output: 7018


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

Output: 8591


Input: Consider Input: 5375 @ 5786 # 7033


Output: 4128