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: 4470 @ 7285 # 4583 @ 9451 # 3236 # 3108 # 2875

Output: 7404


Input: Consider Input: 722 # 9533 @ 3199 @ 4825 @ 817

Output: 30


Input: Consider Input: 9981 # 511 @ 109 @ 6556


Output: 16135