题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
row = int(input()) # 行数
hash_table = {} # 创建空哈希表
for _ in range(row):
items = input().split(" ")
key = int(items[0])
value = int(items[1])
if not hash_table.get(key):
hash_table.setdefault(key, value)
else:
hash_table[key] += value
sorted_keys = sorted(hash_table)
for key in sorted_keys:
print(f"{key} {hash_table.get(key)}")
