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: 6203 # 8978 # 1139 @ 240 # 4716

Output: -8390


Input: Consider Input: 1855 # 9818 @ 3927 @ 9533 # 8557 @ 619 # 7543 # 2844

Output: -12828


Input: Consider Input: 5481 # 4316 @ 754 # 7549 @ 6074 @ 5785 # 8584 # 4721 @ 3871


Output: -3205