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- def RecBT(prefixa, infixa, p, q):
- if p <= q :
- global atual
- global endl
- atual += 1
- pos = infixa.find(prefixa[atual])
- RecBT(prefixa, infixa, p, pos-1)
- RecBT(prefixa, infixa, pos+1, q)
- endl += infixa[pos]
- endl = ''
- atual = -1
- while True:
- try:
- entrada_linha = raw_input().split()
- atual = -1
- endl = ''
- pre = str(entrada_linha[0])
- inf = str(entrada_linha[1])
- RecBT(pre, inf, 0, len(pre)-1)
- print endl
- except:
- break
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