题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
#输入key和value
n=int(input())
#初始化字典
dict1={}
for i in range(n):
#将string转化为list
list1=list(input().split())
list2=list(map(lambda x:int(x), list1))
#更新字典
dict1[list2[0]] = dict1.get(list2[0], 0) + list2[1]
#输出排序后的字典
for key in sorted (dict1) :
print(key, dict1[key], end ="\n")
