Chef and Intervals

Chefs friend Vasya gave chef a task to determine for each range if it contains some other range and if some other range contains it. Range [$x$,$y$] contains range [$l$,$m$] if $x$≤$l$ and $m$≤$y$. ### Input The first input line has an integer n: the number of ranges. After this, there are n lines that describe the ranges. Each line has two integers $x$ and $y$: the range is Range [$x$,$y$]. Yo