题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
n = int(input())
L = []
dic = {}
for i in range(n):
a = input()
b = a.split()
b = [int(i) for i in b]
if b[0] not in L:
L.append(b[0])
if b[0] in dic.keys():
dic[b[0]] = dic[b[0]] + b[1]
else:
dic[b[0]] = b[1]
L.sort()
for i in range(len(dic)):
print(str(L[i])+" "+str(dic[L[i]]))
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