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: 9835 @ 3285 # 8713 # 3066

Output: 1341


Input: Consider Input: 6514 # 8296 # 4939 # 5783 @ 1077 @ 3237 @ 5941 # 7665 # 2408

Output: -12322


Input: Consider Input: 3107 @ 5309 # 2255 # 1716 # 4085 @ 2405


Output: 2765