题解 | #合并表记录#
合并表记录
http://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
n = int(input().strip())
dic = {}
for i in range(n):
k,v = map(lambda x:int(x),input().strip().split())
if dic.get(k):
dic[k] += v
else:
dic[k] = v
for k in sorted(dic): #sorted(dic)默认按照key排序，返回list
print(k,dic[k])
查看19道真题和解析
