Does Not Compute

In some science fiction stories and films, when computers encounter an illogical situtation, their response is often “DOES NOT COMPUTE.” For this problem, you will write a computer program which can simulate this behavior whenever it sees arithmetic statements that are incorrect.

The input file contains multiple test cases, each of which describes an arithmetic statement. Each statement is of the form “A OPERATOR B = C”, where A, B, C are integers, and OPERATOR is “+”, “-”, or “*” indicating addition, subtraction, or multiplication. The integers A and B are both in the range 1 to 999, and all tokens are separated by whitespace (spaces or newlines). The last test case is followed by a line containing a single zero.

For each test case, print the case number (beginning with 1) followed by either OKAY (if the statement is correct), or DOES NOT COMPUTE (if the statement is incorrect).