N = int(input())

item_name= []
price_list =[]

for _ in range(N):
    *item, price = input().split()
    item_name.append(' '.join(item))
    price_list.append(int(price))

unique_item= []
unique_price= []

for item, price in zip(item_name, price_list):
    if item not in unique_item:
        unique_item.append(item)
        unique_price.append(price)     
    else:
        ind= unique_item.index(item)
        unique_price[ind]= unique_price[ind]+ price

for item, total_price in zip(unique_item, unique_price):
    print(item, total_price)