Merkkijono

import random
s=input()
#TAPPOSTRINGI s="SFNDJFCJERCJESJGSGTKLODIXMKGDFPAOOFKRGJPYXVAIJJZXFXJGYZQNWODQRSIXYCBNPENESMIVDSDHLARAYHCDNLZKXMXOWVFDYXVGPKNPXHNLUZHRGRMOAVNTMTAKTPCFBGKVHOUAUXPUHDZUGLEKTUHQFLRUOHWEOVWDKBJIDCLXETNIJTFBQACHDRKUNTQUBJLNBJQLLMFDPFCIEJFIHGDNNGXXDNAWDTQOHYLOWPLEEXJQLBYCYOKVOQVFKFVBKIVCPBIKOFDLZCRMTUBBFPPEUTACGNATJBMMQOHXQCZOKEVGAUHEIGIRAVCOPBJDLNBBALRQVSFTGERDIPGYQRSOCBIRZJHHXEJELNXLQJYAFBKYTANUWWBDCTOKYSQNKJROUKIXZVVPCEKVLOCHFSEOTDTIVEMKQJNVARVBITCAPASUJDEYDURQKVBGGTSCIKGLOCOABQLFFOZLNGWJZBFLQBSMBRXMRWSDIXMJARYOXGOLIHIZDLRWBPCATLZSOCPAIRZTOWDMLTAUMVOPVDSKJPSEXQPEMQDYQFVNNUNXZADRNGPFPMSUOGGHJTHSRAACSYRCHBPRXYKKDORNYLEHYVQABZOWQFQEUMXMCGPLQBQMURAIMXUWAAQFLYCIMTBICIGRCKQOARMHZKHNDHBARGQHCWVDPNHONZAMSPVFOYZIDRPDYHRBEDAWEVLEDTBPOYHAVSGSVWZFCCFIRHENOOZBPHRMELESKXNCNEPRWVZVYLEKDWNCPGHZDLFQAANIAAMYHLEWNQMWHRTETVNFLVNBNIXJJVPCJHSSFFJMZYIZFXEOZJXWDFVDUIIDEGXQINXDRWRSUZZXNWMHSOGLQQYCNTTVQXETSLBPEKHOMOSNSQRAUOFCJGDYMRLFXFRIIKRQMOKFJTSXRKTEJVGLIRQPDDWEEMPWGMGVNAEEFGYOBFOEEMANTNLAFYUBJLMGLIVXFSTKUWEPIHYRTFMHVJTSYVODCPJ"
p=0
c=""
while c!=s:
#    print(p)
#    print(c)
#    print(f"Ässän pituus: {len(s)}; C:n pituus {len(c)}")
    c=s
    for x in range(len(s)):
        if p == s[x]:
            be=s[:x-1]
            en=s[x:]

            while True:
                if len(en)==0:
                    p=0
                    break
                if en[0]==p:
                    en=en[1:]
                else:
                    p=0
                    break
            s=be+en
            break
            
        p=s[x]
            
#print(f"S {(s)}; C {(c)}")
#print(f"S {len(s)}; C {len(c)}")
print(s)

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED