题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
n = eval(input())
d = {}
for i in range(n):
x1,x2 = input().strip().split(" ")
d[x1]= eval(x2)+d.get(x1,0)
output = sorted(d.items(),key=lambda x:eval(x[0]),reverse=False)
for i in output:
print(i[0],i[1])
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