I have a complain. I have solve Question B & C of [Codeforces Round 931](https://mirror.codeforces.com/contest/1934) & it was succesfully run in pretests, but after the contest it's showing runtime error. & submitting the same code after the contest it is succesfully accepted. Please tell me how it's happened. [user:harsh__h,2024-03-01]↵
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C: [During Contest](https://mirror.codeforces.com/contest/1934/submission/249172522) & [after contest](https://mirror.codeforces.com/contest/1934/submission/249188575)↵
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B: [During Contest](https://mirror.codeforces.com/contest/1934/submission/249138719) & [after contest](https://mirror.codeforces.com/contest/1934/submission/249187824)↵
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[Later Edited]: I have got the problem that it's due to vector size declaration of 30, but i am confused why it didn't give runtime error on test 1 instead of this later cases.
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C: [During Contest](https://mirror.codeforces.com/contest/1934/submission/249172522) & [after contest](https://mirror.codeforces.com/contest/1934/submission/249188575)↵
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B: [During Contest](https://mirror.codeforces.com/contest/1934/submission/249138719) & [after contest](https://mirror.codeforces.com/contest/1934/submission/249187824)↵
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[Later Edited]: I have got the problem that it's due to vector size declaration of 30, but i am confused why it didn't give runtime error on test 1 instead of this later cases.
