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: 7371 # 9025 @ 8352 # 9201 # 9297 # 3561 @ 8576

Output: -6785


Input: Consider Input: 6348 # 2614 @ 3559 @ 9670 # 1137 # 9684

Output: 6142


Input: Consider Input: 770 @ 824 # 2624


Output: -1030