# python 3.4.3
# convert BF code to shorthand BF by by replacing 3 or more commands with a decimal number and the command
# in the form +++++ becomes 5+
#             ]]] becomes 3]

prevch=""
nextch=""
counter=1
total_count=0
command_set="<>+-[],."

file = open(input(("bf file: "), 'r')

print()

while True:
	nextch=file.read(1)

	if(not nextch):
		file.close()
		break

	if(nextch in command_set):

		total_count += 1

		if(nextch != prevch):
			if(counter == 1):
				print(prevch, end="")
			elif(counter == 2):
				print(prevch, end="")
				print(prevch, end="")
			else:
				print(counter, end="")
				print(prevch, end="")
			counter=1

		else:
			counter+=1

		prevch = nextch

if(counter == 1):
	print(prevch, end="")
elif(counter == 2):
	print(prevch, end="")
	print(prevch, end="")
else:
	print(counter, end="")
	print(prevch, end="")

print()
print()
print(total_count, "Commands")

"""
Sample input BF code, Hello World implementations from the Esoteric Programming Language Wiki
++++++++++[>+++++++>++++++++++>+++>+<
<<<-]>++.>+.+++++++..+++.>++.<<++++++
+++++++++.>.+++.------.--------.>+.>.

bf_l2s.py returns:

10+[>7+>10+>3+>+4<-]>++.>+.7+..3+.>++.<<15+.>.3+.6-.8-.>+.>.
111 Commands

bf_s2l.py returns the original program (without formatting), and it runs too!
"""