题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
def merge_records(n):
records = {}
for _ in range(n):
index, value = map(int, input().split())
if index in records:
records[index] += value
else:
records[index] = value
for index in sorted(records.keys()):
print(index, records[index])
n = int(input())
merge_records(n)
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