# Remove the Consecutive Duplicates string word:
# First System:
#Example input: BBBBBPPIIAICCODEE
s = input()
s2 = ""
prev = None
for chr in s:
if prev != chr:
s2 += chr
prev = chr
print(s2)
output: BPIAICODE
# Second System:
# Example input: SSSWWWIIFTPPYTHOOOOOOOOONNNNNNNNN
'''
def removeConsecutiveDuplicates(s):
if len(s) < 2:
return s
if s[0] != s[1]:
return s[0] + removeConsecutiveDuplicates(s[1:])
return removeConsecutiveDuplicates(s[1:])
# This code is contributed:
s1 = input()
print(removeConsecutiveDuplicates(s1))
# output: SWIFTPYTHON
'''