# The inputs to this node will be stored as a list in the IN variables.
lists = IN[0]
prefix = IN[1]
# Place your code below this line
numbers = []
i = 0
for list in lists:
aux = []
for number in list:
nString = str(number)
if len(nString) < 2:
aux.append(prefix[i] + "0" + nString)
else:
aux.append(prefix[i] + nString)
numbers.append(aux)
i += 1
# Assign your output to the OUT variable.
OUT = numbers