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: 345 @ 1076 @ 7948 # 854

Output: 8515


Input: Consider Input: 2495 @ 7683 @ 706 @ 5746 @ 7998 @ 5941

Output: 30569


Input: Consider Input: 112 @ 6885 @ 1353 @ 5532 # 712


Output: 13170


