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  1. Prepare
  2. Python
  3. Collections
  4. Collections.OrderedDict()
  5. Discussions

Collections.OrderedDict()

  • jon257
     + 0 comments

    I know ordered dictionaries are the norm in modern versions of py3, but added the import just for the spirit of things. 

    from collections import OrderedDict as od

if __name__ == '__main__':
    n = int(input())
    dic = od()
    for i in range(n):
        product, price = input().rsplit(' ', 1)
        dic[product] = int(price) + dic.get(product, 0)
    print(*(f"{k} {v}" for k, v in dic.items()), sep='\n')