diff --git a/2022/day6.py b/2022/day6.py
new file mode 100644
index 0000000..026dffd
--- /dev/null
+++ b/2022/day6.py
@@ -0,0 +1,17 @@
+# -*- encoding: utf-8 -*-
+
+import itertools
+import sys
+
+data = sys.stdin.read().strip()
+
+
+def index_of_first_n_differents(data: str, n: int) -> int:
+    for i in range(len(data)):
+        if len(set(data[i : i + n])) == n:
+            return i + n
+    return -1
+
+
+print(f"answer 1 is {index_of_first_n_differents(data, 4)}")
+print(f"answer 2 is {index_of_first_n_differents(data, 14)}")
diff --git a/2022/inputs/day6.txt b/2022/inputs/day6.txt
new file mode 100644
index 0000000..4af5dd5
--- /dev/null
+++ b/2022/inputs/day6.txt
@@ -0,0 +1 @@
+qfmfhmhjmjggwbbvdvwvlvrrtsrsccwsslvlffjrrtprprjjvmmclmmghhddpvddclctcqtccgbgdbgdgsdgghqhtqtvvptvppwrwprpvrrrhpphththvhhrnnhnlnslnlhnhnhgnhnpnqqsmsgsllprlprrlzzqzffmzztctbtnbtthlttqvqcqmcmpcpbbczzbqbgghcghchhvwvllfrfnnbssfzsszpsplpglpprnpnfnbnhbnbtbzzvbvpbbhjjlzzbtbvbppczppbwppqwwnwlwccglgvgrgmmdwmwrmrppnfnhhhhqthqthqqrhrshhhqbhqqjgjvjllzvzbzhbbpttjsszvzqqtzzmbmddpldpdcdnccrmcrmmpwprplrrqssvddmpdmmwfwwlrljrrdsssmhsspnpffjggqllnzlnlhnnmddfrfpfbbvssjsrrznngcghgchcmhmrrrtzztjzzhchssslsmlmvvpwpqpjqjdddmsdmmtgtmgtglttfbbgrrcprrqffmmjnjttcmczzgbzggthhsttpggrmmgwwnpnqnqvnqvqppmlpmlpmpjpljljmmtpptfppfrppfdpfdppddmdttgzgzzdbzdzhzhnnsqssvmvbbpjjzwwvnwvvzmvzmzpmpttvrvccqddpgdppgmmthmthtggsfsbbvfbvfvhfvhvvpwpddqrqgqhghnnfmfbbwrbrgbgbvgbbdttffrddqbqpqzzmttlhhsqhsqhsqhhlplttpnpsstpthhpfhpfplprrgfrgffjppghgppghgdggjmmcgmccjvvsrvsrrwgrgmrrngrgttvbtbltthrthrttmfffjpfpssncnrngrrltrltlggjgcgllrzzllhwwjwrwgrgsrgrhrphrhhqwqsqmqlmqlmqmqrmrnnwnhwnhwhzwzjwwgbghhsjspszsznzfztfzfpzzlczztctsstctqtfqfqcfqqjrjccttmqqfpfdfnfwnffqbfbblpbpfpcfcwfccblbwwmqwqrrgprpccngnhghpppwmpplcppfrfjjgmmbzbhbcbzzgdgsdsvvqllzlppnfnlnlslsljlppcscqqfjjjwzwppfgfjjsvvsggjbjljpjpzjzrzjrzzfnfpnfpnfpnfnsnggmpggdllpmmrhhdqqppttgqqcsqsjsbjsjrsrqrbqqmbmcbmcbmbfmfvfqqdbdppmrprnrggmjjhnhbhdhbbfcbbcjjdhhwjwmjmssjswscswcwzccbgbqqmqgmmsdsjsbsdbsddvttjpppcqpcqcgqqslqsssczszrzvvrtvvjppswwhnnwlwtwhhwwzfwwpfpddlvvnvnnvlnntjtqjqjzzjttvvbqbhqbhbbbwnwhnwnppdbpdpvddrqdqjjlvlqqdfdhdjhdjdcjcrcjjggfmfvvfllvfvgglzllmhmzmdddfwddqjjqjfqfcfrrstrssptsstllrflfwwgswslwlbwbwjjvhvfvhfhffhsslwsllbnbblccbwwjqwqqdllrdrnrnffcbbqqpnqqdmdndtntvvrjvvsvmvgvnnmjlwgnjcwljgwnrwpqlztwrpmpgqtwlhrcwsrrhqhjhznrtpqfdnzbfqrzwslptdbdcnqvcllpjsfdvmzqwvzbpnmfcfcjnbmhtwhttjgtnczwctpdthhwmzvzrrgsnmbflgmszgsbvghbzgcmcmszgsbfmlmpbdspqlftmqrcjtmvgcrzznlfwjcbmddplsqrfflqnqfsldwhnncczdmfrrrsbjjqsdzrsgbdbwjbslfcqglsqfddhdsrcdrgqfqthgmfjvnfdfgdncfzpvqcpscnpmfgvqbfwszwzgmqvmcrdrwplfshdgqrchmccpqfznbmfvlhdpctlqgjslrwhjfjlmqfblgjrdlnzdtwlpwhnrhrcrpfwqpmjlgrdbgpbljntmbqlblqqqpgrnjtmjqvjpzvsqdpgtchmmwbhtmgcjqdplrtptqcvdjjpqdzsrcjhcwvdcghlwrdhtdfctmqfcjcqhcvvbzgsvlggcrdgqbtznwwmnbgsfrjprqgcmlswftlwpqqqvshdprldrsghmhrqvmqmvglbvzpvtrjbhcvhqmvdtcvsllznqzjmhpnlbhmlzthbwwhhvdtcdfdcdzhnbsrnqqjvzzsvfjhbsdlsbdlqjnlpnhfcjtdppzmphghltztzcdvzwbftbvwhvgmrllqfzrpbltptdtjjqtfwjfmczzgdvclqbsbftgtlhnhrrvbpvdltstdnhqvpvtjhmghptvsfnlspslmfsftzdrwljrgblgmcbmlszmhnlfdtmsrnjqwrfmsnfgpcqgzmlwppffrmbvhnlstfpgzwwmwffrqpdfvrspbczbrclwljgzfhpsrwwpdndfgjwbjtftnjrqvmtmzvjmtlmjhhptmgjvfrlzncmhnmpfcwpjbcpftqfzvmtldqhjpwvzrdnvnwnscgzslvfgjjpcvjshctmmpjbgdwtdjtlmztsbmwrjtmltnlsmwmjnpcgpprnfwcqdldbbqbfmdnvprzqwvntgzdbrsgdpgdjbcblmqpdphmwgvbgwlpblflphvjgjsjfshbjdftcqmsdnrzbgngcvddddjvrndhdcscqqswrnvslfrlvvncqjhzlbhdqhtrlvdsvjsbglhfzfphmzfmzqdvjqdwhjgfdwmzsdmbjzstjddfmfqjhmbdgdbvvhbqgstrzpvhpthhbwljczzrmvgsmbqvzdrmhvvjlmphzjfbmfqvwhtnrlfnfmqnnjvnwjswzshwgljmfjhrwbwgtpdqnqgqdzbssbjfbsgwmfzpfjdrtrnmsdffhnbgnrdlbjzfjrvtjgjgcvvzgllljrcrshczvpfqgnwnjjnhbwgvzwrptrgrdgtczjfzzndsqhqpmtqsvmcncfszsjllzzsjjmwgplpjwlhnhgbhctrttgzqbbcflzqvqgmhgdtlvfpbtncbwsjgnzpmbspcqzzwfplfprqlnbctwwrzpjtpfrmnpvnjrjppqrzjrcmggfmhrstzhmsjllcgjhwrbhcrvdvgmvjqqgmczlmhstmthzphlvrrvqmhjzzfzbhphstflhfjdlwqvzlsszctrdchwjssdfjjfzszlqdtwwthfjdqprpfftgdrpdhhcsdcpjbhdrgzwbgjspmffcmgcjnpmwsqwsvpfwzddlcpvlgpvctrssghndhvdmmmgndcjvhdjwttqphsjpgfbsdczmplfpwpzzjlbhrjptmsshfttnmhzdzmjctbltqjmfnpndqgwjzwdwrgdjdmcbtvjqwjngrtbfrwcttpdvcqtwqndznbchjqcqttrhjpjgwdbwzvwgmdsdfmpdwctvntvnsdmfnznfrsdcllpgpnstrrfrwrfrwnhbclnqhltrcdwqwzzldgbbtzmcvnbzmwcmntqpbscqrpzcjnbgbrzpcrcmdmdfsfgdpmgvwccqjrltrgfvjdgbhjndnmtnjjhzvghscdhnhflwplrqdzrnlnsvrtrdnphgqwjwqcjvtfdfshqdwbsvgrqbdlncjmhdmrlsvdnrhztznczzllsvpqlvwgqjvgvvwgrjcvtjvhrsgbdgvlmmtjbwrnftzphnqslcpggztgsdbjsbdtzwprsbcljpbwjhcrffnvtplcdlgmbtcgbllbdmwhwcllbqstnqqvdbcjrglwbmcfqvlvtpqncbspbphflvvrrsprlhqspfmqrsdtdlftsfzrqwdfffbhccvpfdtlptqzllfsbbrfnhjgwhlfcwmmjgjndcwfhdzvvvrzmwllthwsdmbbsrfrzmqnlnqnjnfpgfvrhsbzhjftmvzrzpqpmlcbnwmbssmvssmmqpvwnsjppdhmnhpntlvqmjnbmtvjnmtbpbzrcfhjfhvztnwrmthbswwthjddjmsdnjmzhhpjdllgscdrgmhfpljfzsmszqsqqgrznddhfmstzdcqpgztgwwqpvrghtmqlgdddlqqwwwtnpldbqtf