题解 | 合并表记录
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
import sys
num = int(input())
dic = {}
for i in range(num):
k , v = map(int,input().split(' '))
if k in dic:
dic[k] += v
else:
dic[k] = v
k_list = list(dic.keys())
k_list.sort()
for k in k_list:
print(k,dic[k])
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