const input = "srlsrsnnwhwwmddwfddgldlglppcnpptftzzchzhbhmmvwmvwvvjsjnjbbvbmvmnmqmfmjfjjmllzddrvrrnsncnznndwwqrqjjsfsjsjsvsvzvtvfvrvhhbwwltttbhhvphhtqqnffsppdqqrmmfrmfrrwvrvrsvrsrzssrqqrfqrfrttqntnpttvrrcncnfftjfjwwfwjwpwwltlwwwvnvcnvvdgvddqlddnllrggqvgvzzjddfgdfdgfffsbfsffjmffprrmgmtmqqgzzlwldlbbgjjnfjnnvlnnlbbnjnzngglmggwtgwttnvtnvndndmnmdmcddzbdbbspbpwbpplvpvnnmtmqqwnwgglhghdhbhqbhhqrqhqcqmmmrwwlvvfnvfnnpddbfbgfgqglgddrggbgbqqfwfjfdjfflzldlbbsbbtftccgqggzgdglglzljjzbzfbzffgftfvtfvvvjmjzjmjfjqqccpcjppzfpzzsvvzjvvfgfmgffzhhdphdpdwdwmdwwlqljjzffzvfzfwzfzcztctssdpssndssvbbtbstbtnngjjspplttpffjggbbqsqnqcncscpcmccbmbdbtbcbbgqgwgwqgwgwsszqznzvvntvvmlvlvqqvgvwgwlldbblclqcqggtqqlsqlsqlqcczzqgghmgmrgmrggljlbjbsbsmmnlmmdppnpfnnvhnnzggchgggbwwvtvpptgpplsljjshhnphhblbnbpbgppfllhsllbtlbtllrprqrvvfgvgpgcpcdddjjplpssjrjqjggncnzccqdqfqpffvddhlhdllgzzrtrztrztzptztwwbjbnjnsjsfsbfbdbccnhnmhnhrhwhfhbbtzbtztzrttrzrfrcrtctqqrlrsshphwphwpwwcmczzpqzqztqqvzzshhddrvdrrztrrqcqbcqbbhnnpfnpfnnmcnmnccnmmhccjjwzwcwbwcwnngtnngrngnsnzzcvvvtnvvtpvtpvtvvhffbsfsnsdsmmzbbrqbqpbpcpdppzmzbmmtdmttvgvrvlrvvhddjgdjdbbthtjhjdjhdjjmssdldjllwppvbvnbnlbbbszbblpbpfbpblbzzszvssbcbgcghgbbcpbbqrrdjdnnjcjddjcdjjcqqhggflftftfhttvlttgdtdrttwppwvvrzzbggrjjmssrjsjmssdtttdbdvddpllpgllthhvfvhvddrhhnznwznwzzpbblvvpmvpmpddjvdvcddvsshfhrrghgnhghmhhmhffrsfrflrfrjrddzgzsggchcfhhsbbsrszzgjggnrrgfffhthdthtnhtntllsjjjwqqsbsttbtzbttlfttczzbfbwfwvvhllltjjsqsdqqspqsszqzhhdrrhccgbcgggcbggnvgvmmwcmmpqmqccshsnnnwrwfrrwrllvhvlvmlvljjgrgvrvddfqfwqfqlfqqqppvmvrmrfrvrwrqrjqrrvmrvmrrvffmtffsfdfdrdwrwjrrcgcwwcdwdrdnrnzztqzzzgdzgdgldltdtvtnnhllrtltbtrbbttgssdhsssrmsscnssmtmqqtssmzzjqzqddfrdrtdrdpdzzppwggsrrfvfnvvmgvgmmdnnbwnntlnntncchcmcjmmvzzzngznnbgbnbnvbvzzfqqmtmrmcmqmvmbmbmcmscsjcsshswsjsvswshwwlnnsslmslmmzgmgsmssrwwmjwmwllvbvppplmmwgmgzgzdgzdgzztrtzzchcssbppdbbmvmqmmzhztzdtzdznnqhhmcmnnncbnngjnjmjnmmqqsnqsnslnlqlppvbvwwvtwtfwtfmzsbdjfvhzcflstpbtprpzmwcwwgzshfssnjdgflcsfglhbvvdctfrccfmwgfvjtvqfqpzzmqtlbvrjqwlwclfzhfzcmwsvprdhzcrghdscprrnqgdgmhhwbcfcfzrcgrwvbstpwbcvcnpmftwwthnsjznzslfdfqhtpsgmjsddmhlhtlzfsnhlcbgnqpqbzppnbcgtzvwdpmgftgsmrwjqwsdnjrrmwrmlcvlqgwldnvmsgnwccwzmdzwdhpmpqffgbnrrrvzqhtlnvqfhgwbbwsghwbrjzjcjmjmsspcmnfbbpmwffbdqffqfwsvtcrghbnldspdhjhjvtdhgmvrzqqlhvnwbdhfprwqdtzswfdzdwhzvfzsfqlzcflhbsvjhnjnthrdrgmjrrbftflpvrmrvvsgnjhrhjffvznmbjtshwgjmcqbfqjlptsrcgzvrhctwsdclrstmsbsbpqpjcvftmvmsmpwmmphlwmljhvllhrmfcncdprrwfmqrlllmsrvrwtbsqddbmblhvqqlcbbtjbslggrshflrddsphbvzhprcvbpmfldnmwtchddbdwhwpgbmjqptsbdzhrbqfwgfltchsggjlbqbhmzbjdncnvsqjvftpwrpdcjzsrvrlzwqfptwzssqpltjhdmtmmgvjzzqswwrsqrqfpdllgzsdlvhfdnzlrmlqdclwhqqbtwdqcrlfdjphjvcfzpwwgphmrldnwjpnmsjnqpwtwglcbthmcbnvpmjbdhmjglgccsmrmbvbqphdlbrrgnbljlhqvgqbctmthvmsfzflwvctwmdgmrlhnmwnsjtzndlwfttcvtslppjwsgbzhztlpzhmjlrbtzfnblwwlddzwqvzbjmffbflvmvnsgjlqwjqvrcrtwbhfzbzzmtwsndqmtnbjbsqjpnwhzqgwwltwgrqfbhjtpzrqvvhgjsbzqmfdsmzjdnplvblvqlrtzsbjgdptdhgvvrblbjppnnhhnvqtmjgwqzwtmjglrjlwsrfdjfmzlsszzzpbwvjbwpcwlplhcmhgpclztjcrmcntnqbnlrmcnhcnhnmjggtqbtvcfmcbdpqhdrvspbrgcwhgjhggwpvjbplhdsnnvgbzhmcrjqvqlwsdvrrnntmwdgdqdvzznjflctlfmfzsdfbpftsscnbtnqcsvtltvnsqpghzcwtjctvwqqnvnddlzbftwrdqzltpczrbmvsmlpfjzphtpnngzdfrjqrtbppbvztsddblspbltsnrtdftmwbblgdqvmscjqpwfvdzphwqgrbpdfcvtvmddgjjpswrqnwjfghtzwzbhtjnwjsrnwhjwcwnrtwrmbmqjhrbmbsslnvtsqnlbzlfdjvmnlhccpzmvpmrnttnshdjsswjlbtpwdwgmzqcthbczngwnfpzbmmrdffqsbrmsgzrtpsstfmdgbclwthflfbzvtptdfpzznvdwncqzvjwsmczwcnwgjpffcbhrtmtnbtjgcvtwdjtrftjwgvzmlfvgdjjjgsftzctplmjjmqfdzzwrtfmwqhwzglwbvsdvtgphsmngvppvlfdjdrzhhzsrvqgfwjbqdqlrwbgdmrglzrchvgwlhhwbvhfszntbrhshvqdznfvngdmhctjnlfhsmchqbqhdtmlntsnpvdzrvwjcjflfqgnprcpscfcmlgbwzmbnfdfnbwngrrbpnvbcdfgcpgtwmtbzptsdvjhwnzpsffglnqlczgsrdzshrfpqtqbmsrgzwwjvqhzjfzldcggvfhtcvzsgfspnlgtjfglwcnbprvssdfbtzqbblzjzmtftfcfprlwsvswjvtpzcpfphvmdnbczzjbjjrpwrncdszrtqjvznvgzcwdvpfvfcqlsdmhsswpnfsvtffnjhstcznwghlpmmqbnhqtddbjdrpvfhgdwjcnfgggmwnqhmsvgzsssbfcfrmbwpfqhrmtdvhbpwzggdvfjnlrgmvjjbqhjmbvszfzdcwrcjhfdczbhmcrwngmrgrldvbjjdgddhbbvqvwztfstfzqnqwvmmdzhzqtrmnqfrhmtdfhrgfqclpqdwthrbgsprccwcsvdbnclglgflhtqstvpwrmnsvflpplrgftlvjwttmdcqwjnbttjqqlwsntplmfrncqzplwgrjpzljtmnwsqfqnzgnrbtscbfzqwnqttnghcgl";

const findMarker = () => {
  for(let i = 0; i < input.length - 3; ++i) {
    if(allUnique(input, i)) {
      return i;
    }
  }
  return -1;

}
const allUnique = (str, start) => {
  for(let i = start; i < start + 3; i++) {
    for(let j = i + 1; j < start + 4; ++j) {
      console.log(`Comparing ${i}[${str[i]}] and ${j}[${str[j]}]...   ${str[i] === str[j]}`);
      if(str[i] === str[j]) {
        console.log("not found at index, ", start, " with string: ", input.slice(start, start + 4));
        return false;
      }
    }
  }
  return true;
}

console.log(findMarker() + 4);