import sys

inp = open(sys.argv[1], 'r')
out = open(sys.argv[2], 'w')

def getentry():
	line = inp.readline()
	
	while line.startswith('#'):
		line = inp.readline()
	
	for i in range(len(line)):
		if line[i] in [' ', '\t']:
			break
	else:
		raise Exception
	
	return float(line[:i]), float(line[i:])

def writeentry(x, y):
	out.write("%f\t%f\n" % (x, y))

entries = []

while True:
	try:
		entries.append(getentry())
	except Exception:
		break

if len(sys.argv) == 4:
	avg = float(sys.argv[3])
else:
	avg = sum([e[1] for e in entries]) / len(entries)

for e in entries:
	writeentry(e[0], e[1] - avg)