Does scanf cause any problems?

help
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1

I submitted 2 solutions to the July Cookoff 2020 problem Even-tual Reduction(EVENTUAL Problem - CodeChef) in the practice section.
Both the solutions are identical except that the number of testcases taken through the first one is by scanf and in the second one by cin. I got WA for first and AC for second and I couldn’t figure out why. Can anyone explain what’s the error with scanf ?

CodeChef: Practical coding for everyone (with scanf)

CodeChef: Practical coding for everyone (with cin)

2

yes i debug and found that n is taking garbage value in scanf. May be because scanf leaves newline character.

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3

Thanks a lot for the help !

4

See e.g. here.

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