#!/usr/bin/python
import sys, os, re

def avg_deviation(values):
	sum = 0
	count = 0

	if not values:
		return (0, 0)
	for x in values:
		sum += x
		count += 1
	average = sum / count
	sum_sq_dev = 0
	for x in values:
		sum_sq_dev += (x - average) ** 2
	std_dev = (sum_sq_dev / count)**0.5
	return (average, 100 * std_dev / average)


list = []	
for line in sys.stdin.readlines():
	(user, system, elapsed, cpu) = line.split()[0:4]
	user = float(re.match(r'([\d\.]+)', user).group(0))
	system = float(re.match(r'([\d\.]+)', system).group(0))
	m = re.match(r'(\d+):([\d\.]+)', elapsed)
	elapsed = 60*int(m.group(1)) + float(m.group(2))
	cpu = int(re.match(r'(\d+)', cpu).group(0))

	list.append((user, system, elapsed, cpu))

print "   user: %0.2fs (%0.2f%%)" % avg_deviation([x[0] for x in list])
print " system: %0.2fs (%0.2f%%)" % avg_deviation([x[1] for x in list])
print "elapsed: %0.2fs (%0.2f%%)" % avg_deviation([x[2] for x in list])
print "    cpu: %d%% (%0.2f%%)" % avg_deviation([x[3] for x in list])
	
