Checking Your Problem's Judging Results

When you submit a solution, the judging result for each test case is displayed in the Submissions tab and on the submission detail screen. When your answer is incorrect, information to help you find the cause is listed from top to bottom.

How to Read Judging Results

1. In the test case list, the verdict (AC, WA, RE, etc.) is shown at the left edge of each row. Hover over a verdict to see its meaning.
2. Once judging finishes, the first test case that was answered incorrectly opens automatically. If all answers are correct, the first test case opens.
3. The opened test case displays a table with the verdict, execution time, memory usage, and exit status, along with Feedback for the problem.
4. Below the feedback, information to help you find the cause of the incorrect answer is shown. The order changes depending on the verdict.
   • When the output differs from the expected output (such as WA), the Image Comparison or output Diff is displayed first.
   • When the program terminates abnormally (such as RE or TLE), the Standard Error Output is displayed first.

Comparing Images

For problems that output images, the expected image and your image are shown in Image Comparison. You can switch between three display modes.

• Side by Side: Displays the two images next to each other. Click an image to enlarge it.
• Overlay: Overlays the two images and lets you switch between them with a slider. This makes it easier to spot differences in position or size.
• Diff: Highlights the pixels that differ. If the two images have different sizes, this cannot be displayed.

Comparing Output

For problems with an expected output, Diff shows your output and the expected output side by side, with differing parts color-coded. If the output is long, it is displayed when you press Show Diff.

Comparing Files

For problems that output files, your file and the expected file are shown side by side in File Comparison, with differing parts color-coded. If the files are long, they are displayed when you press Show Diff. If a file is too long, only the beginning is shown. If you did not create a file, a message to that effect is displayed. Text output files that are not comparison targets are shown under Output Files, and images are shown under Output Images. Other binary files are shown by name only.

Reading Long Output

When standard input, standard output, or standard error output is long, only the beginning is shown along with a Show All button. Pressing it displays the entire content, and Collapse returns it to the shortened view.

When You Don't Understand an Error

If Explain Standard Error Output with AI appears below the Standard Error Output, pressing it will have AI explain the meaning of the error message.

When Some Information Is Not Shown

• For private test cases, Details of this test case are private is displayed, and you cannot view the input or output.
• For problems where displaying judging results has been disabled, the verdict itself may not be shown.