from collections import OrderedDict

n = int(input())

od = OrderedDict()

for _ in range(n):
    
    *name_parts, item_price = input().split(' ')
    
    item_name = " ".join(name_parts)
    
    if item_name in od:
        
        od[item_name] += int(item_price)
        
    else:
        
        od[item_name] = int(item_price)

for name, total in od.items():
    
    print(f'{name} {total}')