General Info

Junior Division

We are sorry about the erroneous statement of problem I.

The test data for problem G is weaker than what it should be. All but one accepted solution submited during the countest should actually get TLE. The rejudge, however, would not be reflected in the final result.

Again, we are terribly sorry for the confusion and inconvenience.

Senior Division

The statement of problem F has been updated. We are sorry for the inconvenience.