题解 | 合并表记录
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
n = int(input())
dic = {}
for i in range(n):
line = input().split()
idx = int(line[0])
value = int(line[1])
dic[idx] = dic.get(idx,0)+value
for idx in sorted(dic):
print(idx,dic[idx])
