2025/03/b-alt.py


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import fileinput

def joltage(line, n):
	if n == 0:
		return 0

	x = max(line[:len(line) - (n-1)])
	return x*10**(n-1) + joltage(line[line.index(x)+1:], n-1)

with fileinput.input() as lines:
	print(sum(joltage([int(x) for x in line[:-1]], 12) for line in lines))