题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
a = int(input())
temp={}
j=0
for i in range(a):
line = input().split()
key=int(line[0])
value=int(line[1])
if key in temp.keys():
temp[key] = temp[key]+ value
else:
temp[key] = value
for i in sorted(temp):
print(int(i),temp[i])
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