Some questions are too tough . Even 1st one is of dp not naive approach. And obviously 2nd and 3rd are more harder.
Mine was
Find max day to survive within city 2D grid.
Find palindrome path from 1,1 to n,n
And
One find max difference based on some constraints
the real problem was they were not showing on how many test cases the code passed!
Hence, no idea how many correct answers i got!
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It would nice if they have similar thing like codeforces pretest pass.
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