Lets say there are 5 Steaks and capacity of pan is 4.
Step 1: Cook first 4 one side for 1 minute.
Step 2: Replace 1 one sided cooked steak with completely uncooked (remaining) one and
        cook for next 1 minute.
Step 3: Now the chef has 3 completely cooked and 2 Half cooked. Cook the remaining
        2 half cooked for another one minute.

so 1 minute at each step, hence 3 minutes total minimal time.

However, story doesn't end here :-). Lets take another example

Now, Lets say there are 7 Steaks and capacity of pan is 4.
Step 1: Cook first 4 one side for 1 minute.
Step 2: Replace 3 one sided cooked steak with completely uncooked (remaining) three
        and cook for next 1 minute.
Step 3: Now the chef has 1 completely cooked and 6 Half cooked. Cook 4 steaks from
        half cooked six for another one minute.
Step 4: Last cook final 2 half cooked one for another one minute

So total minimum time take is 4 minute. 1 minute at each step.

Please keep in mind the scenarios where 0 steaks or steaks less then cooking capacity of pan.

Edited by author 08.06.2017 20:19

Edited by author 08.06.2017 20:20

Thanks

the scenario with n == 0 or k == 0 won't happen as in the statements it says 1 <= n, k <= 1000