from collections import defaultdictins=[]while True: try: ins.append(list(input().split())) except: breakn,l,r=[int(val) for val in ins[0]]w=[int(val) for val in ins[1][0]]edges=ins[2:]#dfs深度优先搜索depth first search实现path搜索def sum_path(n,l,r,w,edges): n_paths=0 #边的数据类型转换 all_edges = defaultdict(list)...