题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
n = int(input())
numbers = {}
groups = []
for _ in range(n):
a, b = map(int, input().split())
groups.append((a, b))
for g in groups:
if g[0] in numbers:
numbers[g[0]] += g[1]
else:
numbers[g[0]] = g[1]
numbers = dict(sorted(numbers.items()))
for k, v in numbers.items():
print(f"{k} {v}")
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