INOI 2020 Discussion

general
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1

All the best to everyone appearing for INOI 2020 tomorrow.
May the force be with you :grin:

Let’s discuss the problems here after INOI.

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2

All the best to everyone for INOI :facepunch::clap:

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3

all the best to all the people who are gonna participate in INOI may india get wonderful coders for IOI

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4

Wishing everyone writing INOI tomorrow best of luck !

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Why do these exams not take place in Windows but in Ubuntu ?

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Official Announcement : ( from here )
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Hope this helps. All the best everyone :slightly_smiling_face: .

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I got 62,for some reason my first question’s some cases in 2nd subtask didn’t work. Otherwise would’ve easily scored 132

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Can someone tell me what the recurrence relation was for the tiles question SUBTASK 3 where K=3? I just couldn’t get it to work.

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How much did you get?

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Getting 200

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12

Someone create the excel sheet please.

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Solution for p2 k=3
DP[i] =dp[i-1]+2*dp2[i-2]+dp[i-3]
Dp2[i]=dp3[i-1]+dp2[i-3]
dp3[i]=dp3[i-3]+dp[i-3]

answer is dp[n]
dp2[i] is the number of ways of to tile a 3i grid with one corner removed and dp3[i] is the number of ways to tile a 3i grid with the rightmost cell removed from first and second row

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14

Getting 135 in pretests.

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Cutoff for 12 will be 135 or 200. Gof 132 :unamused:

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Cutoff for class 8th in INOI 2020

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100 or 132

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Cutoff for 10th?

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I am in 10th and got 132 in pretests

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Cutoff for 9th?

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