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  4. DefaultDict Tutorial
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DefaultDict Tutorial

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  • guchhaitpralay7
     + 0 comments
    from collections import defaultdict

size_A, size_B = map(int, input().split())

occurrences: dict[str, list[int]] = defaultdict(list)

for i in range(size_A):
    word_A = input()
    occurrences[word_A].append(i + 1)

for _ in range(size_B):
    word_B = input()
    if word_B in occurrences:
        print(*occurrences[word_B])
    else:
        print(-1)

  • reidenw
     + 0 comments

    from collections import defaultdict

    n, m = map(int, input().split())

    d = defaultdict(list)

    for i in range(1, n+1): word = input() d[word].append(i)

    for j in range(1, m+1): word = input()
    print(* d[word] if d[word] else [-1])

  • finndemoncat
     + 0 comments
    # Enter your code here. Read input from STDIN. Print output to STDOUT
from collections import defaultdict

n, m  = map(int, input().split())

groups = defaultdict(list)
for _ in range(n):
    groups["A"].append(input())
    
for _ in range(m):
    groups["B"].append(input())

for char in groups["B"]:
    
    if (char not in groups["A"]):
        print(-1, end=" ")
        
    for x in range(len(groups["A"])):
        if(char == groups["A"][x]):
            print((x + 1), end=" ")
    
    print('')

  • sriyon_pal
     + 0 comments

    from collections import defaultdict

    n=input() n,m=map(int,n.split()) d=defaultdict(list) for i in range(n): word=input() d[word].append(i+1)

    for i in range(m): word=input().strip() if word in d: ans=d[word] ans=map(str,ans) newans=" ".join(ans) print(newans) else: print(-1)

  • dheenupriya2001
     + 0 comments
    from collections import defaultdict

n, m = map(int, input().split())
A=defaultdict(list)

for i in range(1, n+1):
    w = input()
    A[w].append(i)

for i in range(m):
    w = input().strip()
    if w in A:
        res = A[w]
        res = map(str, res)
        result = ' '.join(res)
        print(result)
    else:
        print(-1)