题解 | 合并表记录
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
from collections import defaultdict
dict1 = defaultdict(int)
for _ in range(int(input())):
a,b = map(int,input().split())
dict1[a] += b
for i in sorted(dict1):
print(i,dict1[i])
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