from collections import OrderedDict 
ordinary_dictionary = OrderedDict()
N = int(input())

for _ in range(N):
    shopping = list(map(str,input().strip().split()))
    item = " ".join(shopping[:-1])
    
    if item not in ordinary_dictionary.keys():
        ordinary_dictionary[item] = int(shopping[-1])
    else:
        ordinary_dictionary[item] += int(shopping[-1])
        

for item, product in ordinary_dictionary.items():
    print(str(item) + " " + str(product))