Merkkijono

string=input()
n=0

while n+1<len(string):
    c0 = string[n]
    rem=1
    while string[n+rem]==c0:
        rem+=1
    if(string[n]==string[n+1]):
        string=string[:n]+string[n+rem:]
        n=-1
    n+=1
print(string)
    

Test 1

Verdict: ACCEPTED

Test 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 7, in <module>
    while string[n+rem]==c0:
IndexError: string index out of range

Test 3

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 7, in <module>
    while string[n+rem]==c0:
IndexError: string index out of range

Test 4

Verdict: ACCEPTED

Test 5

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "input/code.py", line 7, in <module>
    while string[n+rem]==c0:
IndexError: string index out of range

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED