题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
# 构建动态字典
n = int(input())
dic = {}
for i in range(n):
line = input().split()
key = int(line[0])
value = int(line[1])
if key in dic: dic[key] = dic[key] + value
else: dic[key] = value
for each in sorted(dic):
print(each, dic[each])
