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: 7178 # 2086 # 1606 @ 4624 @ 4559 # 4855

Output: 7814


Input: Consider Input: 7106 # 9524 # 2673 # 4668 @ 6755 # 5653 # 2688 # 9360

Output: -20705


Input: Consider Input: 9473 # 3213 @ 6413 # 2987 # 6687


Output: 2999