> For the complete documentation index, see [llms.txt](https://docs.icpc1hn.work/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.icpc1hn.work/2.-huong-dan-du-dung-app-icpc1hn/cuoc-hen-check-call/check-call-nhanh.md).

# Check call nhanh

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<figure><img src="https://3851242760-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQS7Vie8hMmEC6mnz4EH2%2Fuploads%2FbfCV1M8ANZUvhZ7qcw8Q%2Fimage.png?alt=media&amp;token=7be57e4c-5937-469b-9bb6-86e093a341f0" alt=""><figcaption></figcaption></figure>

<figure><img src="https://3851242760-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQS7Vie8hMmEC6mnz4EH2%2Fuploads%2FMkOlDac3Al6DOKQJlqjV%2Fimage.png?alt=media&amp;token=dde7559b-8389-4605-ac9f-19f4c1fde81f" alt=""><figcaption></figcaption></figure>

<figure><img src="https://3851242760-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQS7Vie8hMmEC6mnz4EH2%2Fuploads%2F2PZ1lI0CJHATdIuHqn5p%2Fimage.png?alt=media&amp;token=ae15defc-8e88-4ea3-8213-be7c74233379" alt=""><figcaption></figcaption></figure>

<figure><img src="https://3851242760-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQS7Vie8hMmEC6mnz4EH2%2Fuploads%2F8GAK9OJbltCYkYsZEF3z%2Fimage.png?alt=media&amp;token=14535b08-8b12-4467-9bac-fd148d2fa0b8" alt=""><figcaption></figcaption></figure>

<figure><img src="https://3851242760-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQS7Vie8hMmEC6mnz4EH2%2Fuploads%2Fm3uvIJFqNYTRdUOsymPY%2Fimage.png?alt=media&amp;token=4e551190-0e66-4920-9019-241be5c580e1" alt=""><figcaption></figcaption></figure>

<figure><img src="https://3851242760-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQS7Vie8hMmEC6mnz4EH2%2Fuploads%2FctTdlSpZIVAH2nfKqHHb%2Fimage.png?alt=media&amp;token=a06633ed-2bd7-4fb9-94b8-fd89edce6d3b" alt=""><figcaption></figcaption></figure>