/* vim: set ts=4 sts=4 sw=4 si foldmethod=marker: */

#include <iostream>
#include <string>
#include <cassert>
#include <cstdlib>
#include <cmath>

using namespace std;

bool isfib(const string* fibs, const string& x) // {{{
{
    for (size_t i(1); i < 500; ++i) if (fibs[i] == x) return true;
    return false;         
} // }}}

int compare(const string& a, const string& b) // {{{
{
    if (a.length() != b.length())
        return (a.length() < b.length()) ? -1 : 1;

    for (string::const_iterator ai(a.begin()), bi(b.begin()), ae(a.end()); ai != ae; ++ai, ++bi)
        if (*ai != *bi)
            return (*ai < *bi) ? -1 : 1;
    
    return 0;
} // }}}

size_t index(const string* fibs, const string& x) // {{{
{
    for (size_t i(1); i < 500; ++i)
        switch (compare(x, fibs[i]))
        {
        case 0:
            return i;
            break;
        case -1: 
            return i-1;
            break;
        default:
        case 1:
            continue;
            break;
        }
    return -1;
} // }}}

int main()
{
    // fibs {{{
    string fibs[500];
    fibs[0] = "-1";
    fibs[1] = "1";
    fibs[2] = "2";
    fibs[3] = "3";
    fibs[4] = "5";
    fibs[5] = "8";
    fibs[6] = "13";
    fibs[7] = "21";
    fibs[8] = "34";
    fibs[9] = "55";
    fibs[10] = "89";
    fibs[11] = "144";
    fibs[12] = "233";
    fibs[13] = "377";
    fibs[14] = "610";
    fibs[15] = "987";
    fibs[16] = "1597";
    fibs[17] = "2584";
    fibs[18] = "4181";
    fibs[19] = "6765";
    fibs[20] = "10946";
    fibs[21] = "17711";
    fibs[22] = "28657";
    fibs[23] = "46368";
    fibs[24] = "75025";
    fibs[25] = "121393";
    fibs[26] = "196418";
    fibs[27] = "317811";
    fibs[28] = "514229";
    fibs[29] = "832040";
    fibs[30] = "1346269";
    fibs[31] = "2178309";
    fibs[32] = "3524578";
    fibs[33] = "5702887";
    fibs[34] = "9227465";
    fibs[35] = "14930352";
    fibs[36] = "24157817";
    fibs[37] = "39088169";
    fibs[38] = "63245986";
    fibs[39] = "102334155";
    fibs[40] = "165580141";
    fibs[41] = "267914296";
    fibs[42] = "433494437";
    fibs[43] = "701408733";
    fibs[44] = "1134903170";
    fibs[45] = "1836311903";
    fibs[46] = "2971215073";
    fibs[47] = "4807526976";
    fibs[48] = "7778742049";
    fibs[49] = "12586269025";
    fibs[50] = "20365011074";
    fibs[51] = "32951280099";
    fibs[52] = "53316291173";
    fibs[53] = "86267571272";
    fibs[54] = "139583862445";
    fibs[55] = "225851433717";
    fibs[56] = "365435296162";
    fibs[57] = "591286729879";
    fibs[58] = "956722026041";
    fibs[59] = "1548008755920";
    fibs[60] = "2504730781961";
    fibs[61] = "4052739537881";
    fibs[62] = "6557470319842";
    fibs[63] = "10610209857723";
    fibs[64] = "17167680177565";
    fibs[65] = "27777890035288";
    fibs[66] = "44945570212853";
    fibs[67] = "72723460248141";
    fibs[68] = "117669030460994";
    fibs[69] = "190392490709135";
    fibs[70] = "308061521170129";
    fibs[71] = "498454011879264";
    fibs[72] = "806515533049393";
    fibs[73] = "1304969544928657";
    fibs[74] = "2111485077978050";
    fibs[75] = "3416454622906707";
    fibs[76] = "5527939700884757";
    fibs[77] = "8944394323791464";
    fibs[78] = "14472334024676221";
    fibs[79] = "23416728348467685";
    fibs[80] = "37889062373143906";
    fibs[81] = "61305790721611591";
    fibs[82] = "99194853094755497";
    fibs[83] = "160500643816367088";
    fibs[84] = "259695496911122585";
    fibs[85] = "420196140727489673";
    fibs[86] = "679891637638612258";
    fibs[87] = "1100087778366101931";
    fibs[88] = "1779979416004714189";
    fibs[89] = "2880067194370816120";
    fibs[90] = "4660046610375530309";
    fibs[91] = "7540113804746346429";
    fibs[92] = "12200160415121876738";
    fibs[93] = "19740274219868223167";
    fibs[94] = "31940434634990099905";
    fibs[95] = "51680708854858323072";
    fibs[96] = "83621143489848422977";
    fibs[97] = "135301852344706746049";
    fibs[98] = "218922995834555169026";
    fibs[99] = "354224848179261915075";
    fibs[100] = "573147844013817084101";
    fibs[101] = "927372692193078999176";
    fibs[102] = "1500520536206896083277";
    fibs[103] = "2427893228399975082453";
    fibs[104] = "3928413764606871165730";
    fibs[105] = "6356306993006846248183";
    fibs[106] = "10284720757613717413913";
    fibs[107] = "16641027750620563662096";
    fibs[108] = "26925748508234281076009";
    fibs[109] = "43566776258854844738105";
    fibs[110] = "70492524767089125814114";
    fibs[111] = "114059301025943970552219";
    fibs[112] = "184551825793033096366333";
    fibs[113] = "298611126818977066918552";
    fibs[114] = "483162952612010163284885";
    fibs[115] = "781774079430987230203437";
    fibs[116] = "1264937032042997393488322";
    fibs[117] = "2046711111473984623691759";
    fibs[118] = "3311648143516982017180081";
    fibs[119] = "5358359254990966640871840";
    fibs[120] = "8670007398507948658051921";
    fibs[121] = "14028366653498915298923761";
    fibs[122] = "22698374052006863956975682";
    fibs[123] = "36726740705505779255899443";
    fibs[124] = "59425114757512643212875125";
    fibs[125] = "96151855463018422468774568";
    fibs[126] = "155576970220531065681649693";
    fibs[127] = "251728825683549488150424261";
    fibs[128] = "407305795904080553832073954";
    fibs[129] = "659034621587630041982498215";
    fibs[130] = "1066340417491710595814572169";
    fibs[131] = "1725375039079340637797070384";
    fibs[132] = "2791715456571051233611642553";
    fibs[133] = "4517090495650391871408712937";
    fibs[134] = "7308805952221443105020355490";
    fibs[135] = "11825896447871834976429068427";
    fibs[136] = "19134702400093278081449423917";
    fibs[137] = "30960598847965113057878492344";
    fibs[138] = "50095301248058391139327916261";
    fibs[139] = "81055900096023504197206408605";
    fibs[140] = "131151201344081895336534324866";
    fibs[141] = "212207101440105399533740733471";
    fibs[142] = "343358302784187294870275058337";
    fibs[143] = "555565404224292694404015791808";
    fibs[144] = "898923707008479989274290850145";
    fibs[145] = "1454489111232772683678306641953";
    fibs[146] = "2353412818241252672952597492098";
    fibs[147] = "3807901929474025356630904134051";
    fibs[148] = "6161314747715278029583501626149";
    fibs[149] = "9969216677189303386214405760200";
    fibs[150] = "16130531424904581415797907386349";
    fibs[151] = "26099748102093884802012313146549";
    fibs[152] = "42230279526998466217810220532898";
    fibs[153] = "68330027629092351019822533679447";
    fibs[154] = "110560307156090817237632754212345";
    fibs[155] = "178890334785183168257455287891792";
    fibs[156] = "289450641941273985495088042104137";
    fibs[157] = "468340976726457153752543329995929";
    fibs[158] = "757791618667731139247631372100066";
    fibs[159] = "1226132595394188293000174702095995";
    fibs[160] = "1983924214061919432247806074196061";
    fibs[161] = "3210056809456107725247980776292056";
    fibs[162] = "5193981023518027157495786850488117";
    fibs[163] = "8404037832974134882743767626780173";
    fibs[164] = "13598018856492162040239554477268290";
    fibs[165] = "22002056689466296922983322104048463";
    fibs[166] = "35600075545958458963222876581316753";
    fibs[167] = "57602132235424755886206198685365216";
    fibs[168] = "93202207781383214849429075266681969";
    fibs[169] = "150804340016807970735635273952047185";
    fibs[170] = "244006547798191185585064349218729154";
    fibs[171] = "394810887814999156320699623170776339";
    fibs[172] = "638817435613190341905763972389505493";
    fibs[173] = "1033628323428189498226463595560281832";
    fibs[174] = "1672445759041379840132227567949787325";
    fibs[175] = "2706074082469569338358691163510069157";
    fibs[176] = "4378519841510949178490918731459856482";
    fibs[177] = "7084593923980518516849609894969925639";
    fibs[178] = "11463113765491467695340528626429782121";
    fibs[179] = "18547707689471986212190138521399707760";
    fibs[180] = "30010821454963453907530667147829489881";
    fibs[181] = "48558529144435440119720805669229197641";
    fibs[182] = "78569350599398894027251472817058687522";
    fibs[183] = "127127879743834334146972278486287885163";
    fibs[184] = "205697230343233228174223751303346572685";
    fibs[185] = "332825110087067562321196029789634457848";
    fibs[186] = "538522340430300790495419781092981030533";
    fibs[187] = "871347450517368352816615810882615488381";
    fibs[188] = "1409869790947669143312035591975596518914";
    fibs[189] = "2281217241465037496128651402858212007295";
    fibs[190] = "3691087032412706639440686994833808526209";
    fibs[191] = "5972304273877744135569338397692020533504";
    fibs[192] = "9663391306290450775010025392525829059713";
    fibs[193] = "15635695580168194910579363790217849593217";
    fibs[194] = "25299086886458645685589389182743678652930";
    fibs[195] = "40934782466626840596168752972961528246147";
    fibs[196] = "66233869353085486281758142155705206899077";
    fibs[197] = "107168651819712326877926895128666735145224";
    fibs[198] = "173402521172797813159685037284371942044301";
    fibs[199] = "280571172992510140037611932413038677189525";
    fibs[200] = "453973694165307953197296969697410619233826";
    fibs[201] = "734544867157818093234908902110449296423351";
    fibs[202] = "1188518561323126046432205871807859915657177";
    fibs[203] = "1923063428480944139667114773918309212080528";
    fibs[204] = "3111581989804070186099320645726169127737705";
    fibs[205] = "5034645418285014325766435419644478339818233";
    fibs[206] = "8146227408089084511865756065370647467555938";
    fibs[207] = "13180872826374098837632191485015125807374171";
    fibs[208] = "21327100234463183349497947550385773274930109";
    fibs[209] = "34507973060837282187130139035400899082304280";
    fibs[210] = "55835073295300465536628086585786672357234389";
    fibs[211] = "90343046356137747723758225621187571439538669";
    fibs[212] = "146178119651438213260386312206974243796773058";
    fibs[213] = "236521166007575960984144537828161815236311727";
    fibs[214] = "382699285659014174244530850035136059033084785";
    fibs[215] = "619220451666590135228675387863297874269396512";
    fibs[216] = "1001919737325604309473206237898433933302481297";
    fibs[217] = "1621140188992194444701881625761731807571877809";
    fibs[218] = "2623059926317798754175087863660165740874359106";
    fibs[219] = "4244200115309993198876969489421897548446236915";
    fibs[220] = "6867260041627791953052057353082063289320596021";
    fibs[221] = "11111460156937785151929026842503960837766832936";
    fibs[222] = "17978720198565577104981084195586024127087428957";
    fibs[223] = "29090180355503362256910111038089984964854261893";
    fibs[224] = "47068900554068939361891195233676009091941690850";
    fibs[225] = "76159080909572301618801306271765994056795952743";
    fibs[226] = "123227981463641240980692501505442003148737643593";
    fibs[227] = "199387062373213542599493807777207997205533596336";
    fibs[228] = "322615043836854783580186309282650000354271239929";
    fibs[229] = "522002106210068326179680117059857997559804836265";
    fibs[230] = "844617150046923109759866426342507997914076076194";
    fibs[231] = "1366619256256991435939546543402365995473880912459";
    fibs[232] = "2211236406303914545699412969744873993387956988653";
    fibs[233] = "3577855662560905981638959513147239988861837901112";
    fibs[234] = "5789092068864820527338372482892113982249794889765";
    fibs[235] = "9366947731425726508977331996039353971111632790877";
    fibs[236] = "15156039800290547036315704478931467953361427680642";
    fibs[237] = "24522987531716273545293036474970821924473060471519";
    fibs[238] = "39679027332006820581608740953902289877834488152161";
    fibs[239] = "64202014863723094126901777428873111802307548623680";
    fibs[240] = "103881042195729914708510518382775401680142036775841";
    fibs[241] = "168083057059453008835412295811648513482449585399521";
    fibs[242] = "271964099255182923543922814194423915162591622175362";
    fibs[243] = "440047156314635932379335110006072428645041207574883";
    fibs[244] = "712011255569818855923257924200496343807632829750245";
    fibs[245] = "1152058411884454788302593034206568772452674037325128";
    fibs[246] = "1864069667454273644225850958407065116260306867075373";
    fibs[247] = "3016128079338728432528443992613633888712980904400501";
    fibs[248] = "4880197746793002076754294951020699004973287771475874";
    fibs[249] = "7896325826131730509282738943634332893686268675876375";
    fibs[250] = "12776523572924732586037033894655031898659556447352249";
    fibs[251] = "20672849399056463095319772838289364792345825123228624";
    fibs[252] = "33449372971981195681356806732944396691005381570580873";
    fibs[253] = "54122222371037658776676579571233761483351206693809497";
    fibs[254] = "87571595343018854458033386304178158174356588264390370";
    fibs[255] = "141693817714056513234709965875411919657707794958199867";
    fibs[256] = "229265413057075367692743352179590077832064383222590237";
    fibs[257] = "370959230771131880927453318055001997489772178180790104";
    fibs[258] = "600224643828207248620196670234592075321836561403380341";
    fibs[259] = "971183874599339129547649988289594072811608739584170445";
    fibs[260] = "1571408518427546378167846658524186148133445300987550786";
    fibs[261] = "2542592393026885507715496646813780220945054040571721231";
    fibs[262] = "4114000911454431885883343305337966369078499341559272017";
    fibs[263] = "6656593304481317393598839952151746590023553382130993248";
    fibs[264] = "10770594215935749279482183257489712959102052723690265265";
    fibs[265] = "17427187520417066673081023209641459549125606105821258513";
    fibs[266] = "28197781736352815952563206467131172508227658829511523778";
    fibs[267] = "45624969256769882625644229676772632057353264935332782291";
    fibs[268] = "73822750993122698578207436143903804565580923764844306069";
    fibs[269] = "119447720249892581203851665820676436622934188700177088360";
    fibs[270] = "193270471243015279782059101964580241188515112465021394429";
    fibs[271] = "312718191492907860985910767785256677811449301165198482789";
    fibs[272] = "505988662735923140767969869749836918999964413630219877218";
    fibs[273] = "818706854228831001753880637535093596811413714795418360007";
    fibs[274] = "1324695516964754142521850507284930515811378128425638237225";
    fibs[275] = "2143402371193585144275731144820024112622791843221056597232";
    fibs[276] = "3468097888158339286797581652104954628434169971646694834457";
    fibs[277] = "5611500259351924431073312796924978741056961814867751431689";
    fibs[278] = "9079598147510263717870894449029933369491131786514446266146";
    fibs[279] = "14691098406862188148944207245954912110548093601382197697835";
    fibs[280] = "23770696554372451866815101694984845480039225387896643963981";
    fibs[281] = "38461794961234640015759308940939757590587318989278841661816";
    fibs[282] = "62232491515607091882574410635924603070626544377175485625797";
    fibs[283] = "100694286476841731898333719576864360661213863366454327287613";
    fibs[284] = "162926777992448823780908130212788963731840407743629812913410";
    fibs[285] = "263621064469290555679241849789653324393054271110084140201023";
    fibs[286] = "426547842461739379460149980002442288124894678853713953114433";
    fibs[287] = "690168906931029935139391829792095612517948949963798093315456";
    fibs[288] = "1116716749392769314599541809794537900642843628817512046429889";
    fibs[289] = "1806885656323799249738933639586633513160792578781310139745345";
    fibs[290] = "2923602405716568564338475449381171413803636207598822186175234";
    fibs[291] = "4730488062040367814077409088967804926964428786380132325920579";
    fibs[292] = "7654090467756936378415884538348976340768064993978954512095813";
    fibs[293] = "12384578529797304192493293627316781267732493780359086838016392";
    fibs[294] = "20038668997554240570909178165665757608500558774338041350112205";
    fibs[295] = "32423247527351544763402471792982538876233052554697128188128597";
    fibs[296] = "52461916524905785334311649958648296484733611329035169538240802";
    fibs[297] = "84885164052257330097714121751630835360966663883732297726369399";
    fibs[298] = "137347080577163115432025771710279131845700275212767467264610201";
    fibs[299] = "222232244629420445529739893461909967206666939096499764990979600";
    fibs[300] = "359579325206583560961765665172189099052367214309267232255589801";
    fibs[301] = "581811569836004006491505558634099066259034153405766997246569401";
    fibs[302] = "941390895042587567453271223806288165311401367715034229502159202";
    fibs[303] = "1523202464878591573944776782440387231570435521120801226748728603";
    fibs[304] = "2464593359921179141398048006246675396881836888835835456250887805";
    fibs[305] = "3987795824799770715342824788687062628452272409956636682999616408";
    fibs[306] = "6452389184720949856740872794933738025334109298792472139250504213";
    fibs[307] = "10440185009520720572083697583620800653786381708749108822250120621";
    fibs[308] = "16892574194241670428824570378554538679120491007541580961500624834";
    fibs[309] = "27332759203762391000908267962175339332906872716290689783750745455";
    fibs[310] = "44225333398004061429732838340729878012027363723832270745251370289";
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    fibs[482] = "39043184998122354968635474677330498542864661988399598709411830703425204209650825540787157763668286722";
    fibs[483] = "63173200356011969809443437297358849022080673265589795452673441480303628721313666802004216758598573763";
    fibs[484] = "102216385354134324778078911974689347564945335253989394162085272183728832930964492342791374522266860485";
    fibs[485] = "165389585710146294587522349272048196587026008519579189614758713664032461652278159144795591280865434248";
    fibs[486] = "267605971064280619365601261246737544151971343773568583776843985847761294583242651487586965803132294733";
    fibs[487] = "432995556774426913953123610518785740738997352293147773391602699511793756235520810632382557083997728981";
    fibs[488] = "700601527838707533318724871765523284890968696066716357168446685359555050818763462119969522887130023714";
    fibs[489] = "1133597084613134447271848482284309025629966048359864130560049384871348807054284272752352079971127752695";
    fibs[490] = "1834198612451841980590573354049832310520934744426580487728496070230903857873047734872321602858257776409";
    fibs[491] = "2967795697064976427862421836334141336150900792786444618288545455102252664927332007624673682829385529104";
    fibs[492] = "4801994309516818408452995190383973646671835537213025106017041525333156522800379742496995285687643305513";
    fibs[493] = "7769790006581794836315417026718114982822736329999469724305586980435409187727711750121668968517028834617";
    fibs[494] = "12571784316098613244768412217102088629494571867212494830322628505768565710528091492618664254204672140130";
    fibs[495] = "20341574322680408081083829243820203612317308197211964554628215486203974898255803242740333222721700974747";
    fibs[496] = "32913358638779021325852241460922292241811880064424459384950843991972540608783894735358997476926373114877";
    fibs[497] = "53254932961459429406936070704742495854129188261636423939579059478176515507039697978099330699648074089624";
    fibs[498] = "86168291600238450732788312165664788095941068326060883324529903470149056115823592713458328176574447204501";
    fibs[499] = "139423224561697880139724382870407283950070256587697307264108962948325571622863290691557658876222521294125";
    // fibs }}}
    
    string a, b;
    while (cin >> a >> b, "0" != b || "0" != a)
    {
        switch(compare(a, b))
        {
        case 0:
            cout << ((isfib(fibs, a)) ? 1 : 0) << endl;
            break;
        case 1:
            cout << "0" << endl;
            break;
        default:
        case -1:
            size_t index_a(index(fibs, a)), index_b(index(fibs, b));
            size_t count(index_b - index_a);
            count += isfib(fibs, a) ? 1 : 0;
            cout << count << endl;
            break;
        }
    }

    return 0;
}