export declare type UnionFindGroupId = number;
export declare class UnionFindSet<T> {
    private id;
    private map;
    private mapRev;
    constructor();
    find(v: T): UnionFindGroupId;
    union(a: T, b: T): void;
    isUnion(a: T, b: T): boolean;
}
export declare class UnionFindArray {
    private data;
    constructor();
    find(v: number): number;
    union(a: number, b: number): void;
    isUnion(a: number, b: number): boolean;
}