Codenation Test Questions jul 15, 2019 topic 1.1

Can anyone provide solutions to these? The test has completed and I want to learn. Check the images for questions topic 1.1

FB announcement says test is cancelled. BTW thanks for the questions.

It was for off campus people afaik?

Only Off campus contest cancelled. For Some nit colleges on campus contest is not cancelled.

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are codenation problems tough than Div-1 codechef problems ?

can u post the test cases ?