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  4. DefaultDict Tutorial
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DefaultDict Tutorial

  • Abdeen
     + 0 comments

    I believe i took the same approach as you did but somehow my code isnt working.

    Can someone have a look and let me know why, thanks!

    from collections import defaultdict

inputs = input().split()
group_A = defaultdict(list)
group_B = defaultdict(list)

n = inputs[0]
m = inputs[1]

for index_1 in range(1, int(n)+1):
    value = input().strip()
    group_A[value].append(str(index_1))

for index_2 in range(1, int(m)+1):
    value = input().strip()
    group_B[value].append(str(index_2))
    
collection = list(group_B.keys())
collection.sort()

for each in collection:
    if each in group_A:
        print(' '.join(group_A[each]))
    else:
        print(-1)