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: 8698 # 7378 # 9188 @ 5767 # 2935 # 2532 @ 7113

Output: -455


Input: Consider Input: 6904 # 1007 @ 9690 @ 9967 @ 9620 @ 4765

Output: 39939


Input: Consider Input: 1201 @ 4452 # 8400 # 4638 # 6678 # 6255 # 7429 @ 4951 # 2754


Output: -25550