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: 6904 # 1007 @ 9690 @ 9967 @ 9620 @ 4765

Output: 39939


Input: Consider Input: 1767 @ 7166 @ 1543 @ 1185 @ 9966 # 6628

Output: 14999


Input: Consider Input: 2869 # 1389 @ 1702


Output: 3182