Can somebody please explain the statement “Two fence colorings are different if there is atleast one plank numbered x whose color differs in both the colorings.” and explain the third test case
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It means two fence colorings are different if atleast one of the plank color in both of fence coloring is differnt.
Let Seven plank fence is there, then
“R R R R R R R”
is different from
“R R R R L R R”
ie. One plank (5th) of different color