题解 | 合并表记录
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
from collections import defaultdict
import sys
n=int (input())
table=[list(map(int,input().split())) for _ in range(n)]
dic=defaultdict(int)
for line in table:
dic[line[0]]+=line[1]
for i in sorted(dic.keys()):
print(i,dic[i])
