并查集基础

def solve(____):
    parent = {}
    def find(____):
        if x not in parent:
            parent[x] = x
        if parent[x] != x:
            parent[x] = find(____)
        return parent[x]
    for op in operations.split(____):
        parts = op.split(____)
        if parts[____] == '____':
            px, py = find(____), find(____)
            parent[px] = py
        elif parts[____] == '____':
            print(find(____))