（1）30分代码
# 读取n,a,b # n表示向量u,v的维数，a，b分别表示u，v的非零值个数 n, a, b = [int(i) for i in input().split()] # 创建两个二维队列存放u,v的信息 List1 = [] List2 = [] for i in range(a): line = input().split() c, d = line d = int(d) List1.append((c, d)) for i in range(b): line = input().split() c, d = line d = int(d) List2.append((c, d)) # 判断，对于两个二维数组中的元组，键相同时，将值相乘，存放在sum中 sum = 0 if len(List1) <= len(List2): # 准备工作，用队列来存放二维数组中的所有第一个值 list2 = [] for i in range(b): list2.append(List2[i][0]) # 对短的那个二维队列进行遍历 for i in range(a): if List1[i][0] in list2: found = list2.index(List1[i][0]) sum += List1[i][1]*List2[found][1] else: list1 = [] for i in range(a): list1.append(List1[i][0]) for i in range(a): if List2[i][0] in list1: found = list1.index(List1[i][0]) sum += List1[found][1]*List2[i][1] print(sum)（2）60分代码
n,a,b = [int(i) for i in input().split()] dict1 = {} for i in range(a): line = input().split() c,d = line d = int(d) dict1[c] = d dict2 = {} for i in range(b): line = input().split() c,d = line d = int(d) dict2[c] = d sum = 0 if len(dict1) <= len(dict2): for key in dict1.keys(): if dict2.get(key): sum += dict1[key]*dict2[key] else: for key in dict2.keys(): if dict1.get(key): sum += dict1[key]*dict2[key] print(sum)