Editorial for Mock CCC '19 Contest 2 S1 - Tudor's Double Doors
Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.
Submitting an official solution before solving the problem yourself is a bannable offence.
The area of half a rectangle with side lengths and
is
.
To print it accurate to one decimal place, the exact area should be stored in a 64-bit integer
and then either .0 or .5 needs to be printed depending on the parity of .
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