题解 | #合并表记录#

n = int(input())

#判别列表
# a = [[0,0]for j in range(n)]
c = [[0,0]for j in range(n)]
b = []
#存入二维
for i in range(n):
    c[i][0],c[i][1] = input().split(' ')
# print(c)


#冒泡排序一下
for i in range(n):
    for i in range(n-1):
        if int(c[i][0]) > int(c[i+1][0]):

            store0 = c[i][0]
            c[i][0] = c[i+1][0]
            c[i+1][0] = store0

            store1 = c[i][1]
            c[i][1] = c[i+1][1]
            c[i+1][1] = store1


# print(int(c[0][1]))
# for i in range(n):
#     a[i][0] = int(c[i][0])
#     a[i][1] += int(c[i][1])
# for i in range(n):
#     print()
count = 0
for i in range(n):
    if c[i][0] not in b:
        b.append(c[i][0])
        count = count + int(c[i][1])
        for x in range(n):
            if c[x][0] == c[i][0]:
                if x != i:
                    count = count+int(c[x][1])
        print(c[i][0],end = ' ')
        print(count)
        count = 0