Roundgod has a rooted tree withnnn nodes, and the nodes are indexed from111 to nnn. Wcy hasmmm quries, in each of which three integers l,r,xl,r,xl,r,x are given. You need to calculate how many pairs of(i,j)(i,j)(i,j) with(l≤i
Roundgod has a rooted tree with nnn nodes, and the nodes are indexed from 111 to nnn. Wcy has mmm quries, in each of which three integers l,r,xl,r,xl,r,x are given. You need to calculate how many pairs of (i,j)(i,j)(i,j) with (l≤i
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