题解 | 合并表记录
n = input()
result = {}
for i in range(int(n)):
res = input().split()
result[res[0]] = result.get(res[0], 0) + int(res[1])
result = sorted(result.items(), key=lambda x: int(x[0]))
for i in result:
print(i[0], str(i[1]))
n = input()
result = {}
for i in range(int(n)):
res = input().split()
result[res[0]] = result.get(res[0], 0) + int(res[1])
result = sorted(result.items(), key=lambda x: int(x[0]))
for i in result:
print(i[0], str(i[1]))
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