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: 1477 @ 6645 @ 6272 # 3080

Output: 11314


Input: Consider Input: 1439 @ 4809 @ 6755 # 4840 @ 491 @ 9049 @ 8905 @ 8915

Output: 35523


Input: Consider Input: 6931 @ 8308 @ 6002 # 6649


Output: 14592