# CCI - Problem 1.6
# Compress a string using repeat characters

s = input("Enter a string: ")
c_string = []
last = s[0]
counter = 0
for i in range(0,len(s)):
  if (s[i] == last):
    counter += 1
  else:
    c_string.append(s[i-1])
    c_string.append(str(counter))
    counter = 1
  if (i == len(s)-1):
    c_string.append(s[i-1])
    c_string.append(str(counter))
  last = s[i]

if (len(c_string) < len(s)):
  print("".join(c_string))
else:
  print(s)

# CCI - Problem 1.6
# Compress a string using repeat characters

s = input("Enter a string: ")
c_string = []
last = s[0]
counter = 0
for i in range(0,len(s)):
  if (s[i] == last):
    counter += 1
  else:
    c_string.append(s[i-1])
    c_string.append(str(counter))
    counter = 1
  if (i == len(s)-1):
    c_string.append(s[i-1])
    c_string.append(str(counter))
  last = s[i]

if (len(c_string) < len(s)):
  print("".join(c_string))
else:
  print(s)