import { PrefixTreeWithSum } from "https://deno.land/x/masx200_leetcode_test@7.6.2/map-sum-pairs/PrefixTreeWithSum.ts";
interface PrefixTreeWithSum
implements PrefixTree
import { type PrefixTreeWithSum } from "https://deno.land/x/masx200_leetcode_test@7.6.2/map-sum-pairs/PrefixTreeWithSum.ts";