Move the matchstick#675
A puzzle is constructed using matchsticks to form an expression in the format A\&B=C, where represents one of the two operations: "+" or "-". Here, , , and are single-digit Arabic numerals (), constructed according to the template shown in the figure below.
Move one matchstick to obtain a valid equation of the same type.
The input contains a single line with the expression in the specified format.
Output one possible correct equation after moving one matchstick. If there is no solution, output "-1".
Example 1