atcoder er problem gula te ei issue ta asteche.

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Step 1

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Eta fix korar jonno apnar ekta https://atcoder.jp/ account thakte hobe. na thakle Sign up kore nin.

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Step 2

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Apnar account e sign in korun

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Step 3

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Mouse er right button press kore Inspect e click korun

Then “Application” tab e jaben. Applicatin tab show na korle mark kora icon e click korun, show korbe.