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  1. Prepare
  2. Python
  3. Collections
  4. DefaultDict Tutorial
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DefaultDict Tutorial

  • cenkmyetis1
     + 0 comments

    from collections import defaultdict

    if name == 'main':
    N = list(map(int, input().split())) d = defaultdict(list) for i in range(N[0]): letter = input() d[letter].append(int(i+1)) #print(d)

    for i in range(N[1]):
    letter = input()
    if letter in d.keys():
        print(*d[letter])
    else:
        print(-1)

    purchase_order(arr, sizes)