分析：能力有限，最后一组数据总是超时，没办法。。只好猥琐一下了。。。
代码如下：
#include <iostream>
#include <fstream>
#include <string.h>
using namespace std;
int p[10000]={5,7,11,101,131,151,181,191,313,353,373,383,727,
757,787,797,919,929,10301,10501,10601,11311,11411,12421,12721,12821,13331,13831,
13931,14341,14741,15451,15551,16061,16361,16561,16661,17471,17971,18181,18481,19391,19891,
19991,30103,30203,30403,30703,30803,31013,31513,32323,32423,33533,34543,34843,35053,35153,
35353,35753,36263,36563,37273,37573,38083,38183,38783,39293,70207,70507,70607,71317,71917,
72227,72727,73037,73237,73637,74047,74747,75557,76367,76667,77377,77477,77977,78487,78787,78887,79397,79697,79997,90709,91019,93139,93239,93739,94049,94349,94649,94849,94949,95959,96269,96469,96769,97379,97579,97879,98389,98689,1003001,1008001,1022201,1028201,1035301,1043401,1055501,1062601,1065601,1074701,1082801,1085801,1092901,1093901,1114111,1117111,1120211,1123211,1126211,1129211,1134311,1145411,1150511,1153511,1160611,1163611,1175711,1177711,1178711,1180811,1183811,1186811,1190911,1193911,1196911,1201021,1208021,1212121,1215121,1218121,1221221,1235321,1242421,1243421,1245421,1250521,1253521,1257521,1262621,1268621,1273721,1276721,1278721,1280821,1281821,1286821,1287821,1300031,1303031,1311131,1317131,1327231,1328231,1333331,1335331,1338331,1343431,1360631,1362631,1363631,1371731,1374731,1390931,1407041,1409041,1411141,1412141,1422241,1437341,1444441,1447441,1452541,1456541,1461641,1463641,1464641,1469641,1486841,1489841,1490941,1496941,1508051,1513151,1520251,1532351,1535351,1542451,1548451,1550551,1551551,1556551,1557551,1565651,1572751,1579751,1580851,1583851,1589851,1594951,1597951,1598951,1600061,1609061,1611161,1616161,1628261,1630361,1633361,1640461,1643461,1646461,1654561,1657561,1658561,1660661,1670761,1684861,1685861,1688861,1695961,1703071,1707071,1712171,1714171,1730371,1734371,1737371,1748471,1755571,1761671,1764671,1777771,1793971,1802081,1805081,1820281,1823281,1824281,1826281,1829281,1831381,1832381,1842481,1851581,1853581,1856581,1865681,1876781,1878781,1879781,1880881,1881881,1883881,1884881,1895981,1903091,1908091,1909091,1917191,1924291,1930391,1936391,1941491,1951591,1952591,1957591,1958591,1963691,1968691,1969691,1970791,1976791,1981891,1982891,1984891,1987891,1988891,1993991,1995991,1998991,3001003,3002003,3007003,3016103,3026203,3064603,3065603,3072703,3073703,3075703,3083803,3089803,3091903,3095903,3103013,3106013,3127213,3135313,3140413,3155513,3158513,3160613,3166613,3181813,3187813,3193913,3196913,3198913,3211123,3212123,3218123,3222223,3223223,3228223,3233323,3236323,3241423,3245423,3252523,3256523,3258523,3260623,3267623,3272723,3283823,3285823,3286823,3288823,3291923,3293923,3304033,3305033,3307033,3310133,3315133,3319133,3321233,3329233,3331333,3337333,3343433,3353533,3362633,3364633,3365633,3368633,3380833,3391933,3392933,3400043,3411143,3417143,3424243,3425243,3427243,3439343,3441443,3443443,3444443,3447443,3449443,3452543,3460643,3466643,3470743,3479743,3485843,3487843,3503053,3515153,3517153,3528253,3541453,3553553,3558553,3563653,3569653,3586853,3589853,3590953,3591953,3594953,3601063,3607063,3618163,3621263,3627263,3635363,3643463,3646463,3670763,3673763,3680863,3689863,3698963,3708073,3709073,3716173,3717173,3721273,3722273,3728273,3732373,3743473,3746473,3762673,3763673,3765673,3768673,3769673,3773773,3774773,3781873,3784873,3792973,3793973,3799973,3804083,3806083,3812183,3814183,3826283,3829283,3836383,3842483,3853583,3858583,3863683,3864683,3867683,3869683,3871783,3878783,3893983,3899983,3913193,3916193,3918193,3924293,
3927293,3931393,3938393,3942493,3946493,3948493,3964693,3970793,3983893,3991993,3994993,3997993,3998993,7014107,7035307,7036307,7041407,7046407,7057507,7065607,7069607,
7073707,7079707,7082807,7084807,7087807,7093907,7096907,7100017,7114117,7115117,7118117,7129217,7134317,7136317,7141417,7145417,7155517,7156517,7158517,7159517,7177717,7190917,7194917,7215127,7226227,7246427,7249427,7250527,7256527,7257527,7261627,7267627,7276727,7278727,7291927,7300037,7302037,7310137,7314137,7324237,7327237,7347437,7352537,7354537,7362637,7365637,7381837,7388837,7392937,7401047,7403047,7409047,7415147,7434347,7436347,7439347,7452547,7461647,7466647,7472747,7475747,7485847,7486847,7489847,7493947,7507057,7508057,7518157,7519157,7521257,7527257,7540457,7562657,7564657,7576757,7586857,7592957,7594957,7600067,7611167,7619167,7622267,7630367,7632367,7644467,7654567,7662667,7665667,7666667,7668667,7669667,7674767,7681867,7690967,7693967,7696967,7715177,7718177,7722277,7729277,7733377,7742477,7747477,7750577,7758577,7764677,7772777,7774777,7778777,7782877,7783877,7791977,7794977,7807087,7819187,7820287,7821287,7831387,7832387,7838387,7843487,7850587,7856587,7865687,7867687,7868687,7873787,7884887,7891987,7897987,7913197,7916197,7930397,7933397,7935397,7938397,7941497,7943497,7949497,7957597,7958597,7960697,7977797,7984897,7985897,7987897,7996997,9002009,9015109,9024209,9037309,9042409,
9043409,9045409,9046409,9049409,9067609,9073709,9076709,9078709,
9091909,9095909,9103019,9109019,9110119,9127219,9128219,
9136319,9149419,9169619,9173719,9174719,9179719,9185819,9196919,9199919,9200029,9209029,9212129,9217129,9222229,9223229,9230329,9231329,9255529,9269629,9271729,9277729,9280829,9286829,9289829,9318139,9320239,9324239,9329239,9332339,9338339,9351539,9357539,9375739,9384839,9397939,9400049,9414149,9419149,9433349,9439349,9440449,9446449,9451549,9470749,9477749,9492949,9493949,9495949,9504059,9514159,9526259,9529259,9547459,9556559,9558559,9561659,9577759,9583859,9585859,9586859,9601069,9602069,9604069,9610169,9620269,9624269,9626269,9632369,9634369,9645469,9650569,9657569,9670769,9686869,9700079,9709079,9711179,9714179,9724279,9727279,9732379,9733379,9743479,9749479,9752579,9754579,9758579,9762679,9770779,9776779,9779779,9781879,9782879,9787879,9788879,9795979,9801089,9807089,9809089,9817189,9818189,9820289,9822289,9836389,9837389,9845489,9852589,9871789,9888889,9889889,9896989,9902099,9907099,9908099,9916199,9918199,9919199,9921299,9923299,9926299,9927299,9931399,9932399,9935399,9938399,9957599,9965699,9978799,9980899,9981899,9989899,100030001,100050001,100060001,100111001,100131001,100161001,100404001,100656001,100707001,100767001,100888001,100999001,101030101,101060101,101141101,101171101,101282101,101292101,101343101,101373101,101414101,101424101,101474101,101595101,101616101,101717101,101777101,101838101,101898101,101919101,101949101,101999101,102040201,102070201,102202201,102232201,102272201,102343201,102383201,102454201,102484201,102515201,102676201,102686201,102707201,102808201,102838201,103000301,103060301,103161301,103212301,103282301,103303301,103323301,103333301,103363301,103464301,103515301,103575301,103696301,103777301,103818301,103828301,103909301,103939301,104000401,104030401,104040401,104111401,104222401,104282401,104333401,104585401,104616401,104787401,104838401,104919401,104949401,105121501,105191501,105202501,105262501,105272501,105313501,105323501,105343501,105575501,105616501,105656501,105757501,105818501,105868501,105929501,106060601,106111601,106131601,106191601,106222601,106272601,106353601,106444601,106464601,106545601,106555601,106717601,106909601,106929601,107000701,107070701,107121701,107232701,107393701,107414701,107424701,
107595701,107636701,107646701,107747701,107757701,107828701,107858701,107868701,107888701,107939701,107949701,108070801,108101801,108121801,108151801,108212801,108323801,108373801,108383801,108434801,108464801,108484801,108494801,108505801,108565801,108686801,108707801,108767801,108838801,108919801,108959801,109000901,109101901,109111901,109161901,109333901,109404901,109434901,109444901,109474901,109575901,109656901,109747901,109777901,109797901,109818901,109909901,109929901,110111011,110232011,110252011,110343011,110424011,110505011,110565011,110676011,110747011,110757011,110909011,110949011,110999011,111010111,111020111,111050111,111070111,111181111,111191111,111262111,111272111,111454111,111484111,111515111,111616111,111686111,111757111,111848111,112030211,112060211,112111211,112161211,112171211,112212211,112434211,112494211,112545211,112636211,112878211,112959211,112969211,112989211,113030311,113090311,113111311,113262311,113282311,113474311,113535311,113565311,113616311,113636311,113888311,113939311,114040411,114191411,114232411,114353411,114383411,114484411,114494411,114535411,114727411,114808411,114818411,114848411,114878411,114898411,115000511,115020511,115060511,115111511,115141511,115191511,115212511,115222511,115404511,115464511,115545511,115636511,115737511,115767511,115797511,115828511,115959511,116000611,116010611,116040611,116424611,116505611,116646611,116696611,116757611,116777611,116828611,116868611,116919611,117070711,117101711,117262711,117272711,117323711,117484711,117505711,117515711,117616711,117686711,117757711,117767711,117797711,117818711,117959711,118252811,118272811,118414811,118464811,118525811,118626811,118686811,118696811,118717811,118818811,118848811,118909811,118959811,119010911,119171911,119202911,119343911,119363911,119454911,119585911,119595911,119646911,119676911,119696911,119717911,119787911,119868911,119888911,119969911,120191021,120242021,120434021,120454021,120494021,120535021,120565021,120646021,120808021,120868021,120989021,121080121,121111121,121131121,121161121,121272121,121282121,121393121,121414121,121555121,121747121,121818121,121878121,121939121,121989121,122040221,122232221,122262221,122292221,122333221,122363221,122373221,122393221,122444221,122484221,122535221,122696221,122787221,122858221,122919221,123161321,123292321,123424321,123484321,123494321,123575321,123767321,123838321,123989321,124000421,124080421,124101421,124131421,124252421,124323421,124333421,124434421,124515421,124525421,124626421,124656421,124717421,124737421,124959421,124989421,125000521,125010521,125232521,125252521,125292521,125343521,125474521,125505521,125565521,125606521,125616521,125757521,125838521,125939521,125979521,125999521,126101621,126161621,126181621,126202621,126212621,126323621,126424621,126484621,126535621,126595621,126616621,126676621,126686621,126727621,126737621,126757621,126878621,127060721,127090721,127131721,127212721,127383721,127494721,127545721,127636721,127656721,127686721,127717721,127747721,127828721,127909721,127929721,128070821,128090821,128121821,128181821,128202821,128252821,128262821,128282821,128444821,128474821,128525821,128535821,128595821,128646821,128747821,128787821,128868821,128919821,128939821,129080921,129202921,129292921,129323921,129373921,
129484921,129494921,129535921,129737921,129919921,129979921,130020031,130030031,130060031,130141031,130171031,130222031,130333031,130444031,130464031,130545031,130555031,130585031,130606031,130636031,130717031,130767031,130818031,130828031,130858031,130969031,131030131,131111131,131121131,131222131,131252131,131333131,131555131,131565131,131585131,131646131,131676131,131828131,132010231,132191231,132464231,132535231,132595231,132646231,132676231,132757231,133020331,133060331,133111331,133161331,133252331,133474331,133494331,133575331,133686331,133767331,133818331,133909331,134090431,134181431,134232431,134424431,134505431,134525431,134535431,134616431,134757431,134808431,134858431,134888431,134909431,134919431,134979431,135010531,135040531,135101531,135121531,135161531,135262531,135434531,135494531,135515531,135626531,135646531,135707531,135838531,135868531,135878531,135929531,135959531,135979531,136090631,136171631,136222631,136252631,136303631,136363631,136474631,136545631,136737631,136797631,136818631,136909631,136969631,137030731,137040731,137060731,137090731,137151731,137171731,
137232731,137282731,137333731,137363731,137424731,137474731,137606731,
137636731,137696731,137757731,137808731,137838731,137939731,137999731,138040831,138131831,138242831,138292831,138313831,138383831,138454831,138575831,138616831,138646831,138757831,138898831,138959831,138989831,139131931,139161931,139222931,139252931,139282931,139383931,139474931,139515931,139606931,139626931,139717931,139848931,139959931,139969931,139999931,140000041,140030041,140151041,140303041,140505041,140565041,140606041,140777041,140787041,140828041,
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159202951,159232951,159262951,159292951,159323951,159404951,159464951,159565951,159595951,159646951,159757951,159808951,159919951,159929951,159959951,160020061,160050061,160080061,160101061,160131061,160141061,160161061,160171061,160393061,160545061,160696061,160707061,160717061,160797061,160878061,161171161,161282161,161313161,161363161,161474161,161484161,161535161,161585161,161636161,161787161,161838161,161969161,162040261,162232261,162404261,162464261,162484261,162565261,162686261,162707261,162757261,162898261,162919261,162949261,162959261,162979261,162989261,163101361,163333361,
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900434009,900484009,900505009,900515009,900565009,900757009,900808009,900838009,900878009,900919009,900929009,901060109,901131109,901242109,901252109,901272109,901353109,901494109,901585109,901606109,901626109,901656109,901686109,901696109,901797109,901929109,901969109,902151209,902181209,902232209,902444209,902525209,902585209,902757209,902828209,902888209,903020309,903131309,903181309,903292309,903373309,903383309,903424309,903565309,903616309,903646309,903727309,903767309,903787309,903797309,903878309,903979309,904080409,904090409,904101409,904393409,904414409,904636409,904656409,904666409,904696409,904717409,904737409,904878409,904989409,904999409,905030509,905090509,905232509,905313509,905373509,905474509,905676509,905696509,905747509,905808509,905898509,905939509,906313609,906343609,906464609,906595609,906686609,906868609,906989609,907000709,907333709,907353709,907383709,907393709,907414709,907444709,907555709,907666709,907828709,907858709,907878709,907959709,907999709,908000809,908060809,908070809,908141809,908343809,908363809,908414809,908424809,908444809,908525809,908616809,908808809,908888809,909070909,909121909,909151909,909272909,909464909,909494909,909676909,909757909,909767909,909797909,909848909,909868909,909878909,909959909,910212019,910242019,910272019,910323019,910333019,910353019,910393019,910444019,910494019,910777019,910848019,910878019,910959019,910989019,911090119,911171119,911202119,911252119,911292119,911303119,911343119,911474119,911565119,911585119,911616119,911717119,911787119,911838119,911868119,911919119,912161219,912323219,912373219,912464219,912484219,912535219,912707219,912727219,912797219,912808219,912898219,913050319,913212319,913272319,913282319,913323319,913404319,913414319,913474319,913575319,913747319,913878319,913939319,913969319,914151419,914252419,914282419,914393419,914505419,914565419,914676419,914909419,914939419,914949419,915010519,915050519,915101519,915131519,915151519,915161519,915313519,915424519,915484519,915515519,915595519,915616519,915767519,915787519,915838519,915949519,916000619,916060619,916252619,916272619,916474619,916494619,916515619,916525619,916585619,916636619,916686619,916777619,916969619,916999619,917000719,917090719,917262719,917424719,917585719,917595719,917727719,917757719,917787719,917868719,917898719,917939719,917949719,918020819,918161819,918191819,918202819,918383819,918404819,918434819,918727819,918818819,918929819,918949819,919080919,919141919,919171919,919191919,919272919,919636919,919686919,919737919,919797919,919818919,919888919,919989919,920111029,920232029,920252029,920313029,920363029,920414029,920444029,920484029,920555029,920636029,920757029,920777029,920787029,920969029,920999029,921050129,921191129,921202129,921212129,921242129,921515129,921757129,921848129,921979129,922242229,922303229,922333229,922393229,922464229,922474229,922494229,922555229,922606229,922959229,922989229,923040329,923070329,923171329,923252329,923282329,923373329,923393329,
923474329,923555329,923565329,923858329,923919329,924020429,924070429,924080429,924232429,924343429,924424429,924545429,925171529,925252529,925515529,925575529,925626529,925777529,925909529,925969529,926000629,926040629,926292629,926303629,926343629,926373629,926454629,926646629,926696629,926787629,926868629,926949629,927212729,927232729,927373729,927404729,927535729,927565729,927575729,927595729,927646729,927757729,927818729,927929729,928020829,928101829,928131829,928191829,928212829,928222829,928303829,928464829,928515829,928545829,928636829,928818829,928828829,928848829,928989829,928999829,929151929,929292929,929343929,929414929,929484929,929555929,929777929,929828929,930383039,930434039,930454039,930494039,930505039,930515039,930575039,930616039,930676039,930838039,931252139,931282139,931353139,931444139,931474139,931494139,931515139,931656139,931666139,931747139,931767139,931858139,932000239,932010239,932111239,932141239,932232239,932333239,932363239,932424239,932444239,932474239,932535239,932585239,932606239,932777239,932858239,932939239,932979239,933010339,933070339,933101339,933272339,933424339,933676339,933727339,933737339,933818339,933868339,933878339,933959339,934090439,934101439,934212439,934464439,934525439,934555439,934626439,934656439,934686439,934696439,934767439,934777439,934828439,934888439,935444539,935595539,935636539,935666539,935787539,935919539,935999539,936020639,936040639,936181639,936202639,936272639,936404639,936515639,936878639,936919639,936949639,937161739,937222739,937393739,937414739,937464739,937525739,937575739,937747739,937777739,937828739,937959739,938040839,938121839,938252839,938313839,938444839,938474839,938505839,938525839,938565839,938585839,938616839,938808839,938939839,938999839,939040939,939161939,939262939,939424939,939515939,939616939,939727939,939959939,940050049,940080049,940272049,940363049,940383049,940414049,940444049,940474049,940585049,940696049,940818049,941030149,941070149,941202149,941393149,941444149,941454149,941484149,941636149,941717149,941808149,941828149,941979149,942131249,942161249,942181249,942191249,942343249,942373249,942404249,942535249,942565249,942616249,942787249,942838249,942868249,943020349,943131349,943272349,943383349,943393349,943717349,943747349,943828349,943848349,943878349,943888349,943909349,944060449,944111449,944121449,944232449,944363449,944373449,944424449,944555449,944585449,944636449,944828449,944999449,945161549,945191549,945232549,945242549,945343549,945373549,945484549,945656549,945707549,945848549,945898549,945929549,945979549,946050649,946101649,946141649,946212649,946303649,946353649,946474649,946626649,946666649,946777649,946929649,946999649,947070749,947141749,947151749,947202749,947313749,947363749,947414749,947505749,947696749,947868749,947939749,947969749,948535849,948787849,948898849,948979849,949030949,949272949,949282949,949333949,949353949,949525949,949555949,949737949,949747949,950010059,950040059,950111059,950181059,950222059,950373059,950444059,950474059,950676059,950727059,950747059,950868059,950898059,951121159,951313159,951353159,951646159,951656159,951727159,951878159,951898159,951919159,952020259,952050259,952060259,952191259,952282259,952333259,952515259,952666259,952696259,952767259,952858259,952909259,952939259,953030359,953040359,953282359,953292359,953313359,953373359,953616359,953757359,953858359,953898359,953939359,954121459,954151459,954161459,954262459,954353459,954424459,954494459,954575459,954595459,954868459,955141559,955222559,955515559,955525559,955545559,955585559,955606559,955666559,955686559,955767559,955797559,956010659,956151659,956171659,956303659,956363659,956424659,956444659,956505659,956525659,956585659,956828659,956898659,956919659,957181759,957262759,957343759,957383759,957424759,957515759,957535759,957545759,957595759,957626759,957686759,957797759,957818759,957838759,957898759,957989759,
958212859,958272859,958323859,958363859,958383859,958444859,958545859,958666859,958828859,958878859,958969859,958989859,959141959,959171959,959262959,959282959,959292959,959414959,959474959,959555959,959646959,959747959,959858959,959888959,959919959,959949959,960010069,960121069,960232069,960313069,960565069,960575069,960656069,960737069,960797069,960878069,960898069,961000169,961212169,961303169,961383169,961414169,961464169,961474169,961515169,961555169,961666169,961828169,962040269,962141269,962292269,962333269,962393269,962414269,962474269,962484269,962565269,962595269,962606269,962696269,962757269,962939269,962999269,963010369,963181369,963313369,963323369,963545369,963757369,963767369,963818369,963868369,963949369,964111469,964191469,964252469,964272469,964282469,964353469,964444469,964585469,964626469,964636469,964717469,964858469,964909469,964959469,964989469,965262569,965363569,965424569,965454569,965636569,965727569,965777569,965828569,965868569,
965888569,965909569,965969569,966020669,966191669,966262669,966343669,966434669,966727669,966797669,966848669,
966919669,967030769,967080769,967191769,967242769,967303769,967414769,967474769,967555769,967585769,967626769,967656769,
967717769,967737769,967747769,967767769,967828769,967939769,968151869,968222869,968292869,968333869,968393869,968414869,968454869,968555869,968606869,968646869,968666869,968676869,968868869,968898869,968999869,969010969,969070969,969080969,969212969,969232969,969292969,969353969,969373969,969424969,969565969,969757969,969787969,970030079,970212079,970383079,970575079,970707079,970717079,970747079,970878079,970929079,970999079,971070179,971141179,971222179,971343179,971363179,971484179,971505179,971525179,971535179,971606179,971616179,971636179,971727179,971868179,971999179,972020279,972080279,972161279,972343279,972434279,972535279,972616279,972626279,972737279,972808279,972868279,972878279,972949279,973020379,973111379,973191379,973333379,973404379,973515379,973707379,974030479,974070479,974090479,974121479,974222479,974252479,974282479,974414479,974444479,974484479,974505479,974616479,974757479,974808479,974898479,975010579,975121579,975151579,975242579,975353579,975535579,975626579,975646579,975727579,975757579,975767579,975797579,975818579,975919579,975979579,976000679,976141679,976252679,976363679,976383679,976464679,
976515679,976606679,976737679,976747679,976777679,976858679,976989679,977000779,977010779,977070779,977121779,977141779,977252779,977343779,977373779,977393779,977424779,977484779,977555779,977606779,977676779,977696779,977787779,977808779,977939779,977999779,978070879,978343879,978353879,978434879,978484879,978656879,978676879,978686879,978727879,978787879,979020979,979323979,979414979,979434979,979545979,979555979,979626979,979797979,979939979,979989979,980111089,980171089,980181089,980202089,980232089,980333089,980373089,980535089,980606089,980636089,980858089,980868089,980888089,980909089,980979089,981151189,981242189,981272189,981313189,981353189,981515189,981595189,981616189,981737189,981797189,981838189,981919189,981959189,982131289,982222289,982272289,982282289,982323289,982353289,982393289,982434289,982656289,982878289,982888289,982909289,982989289,982999289,983010389,983090389,983141389,983181389,983222389,983232389,983373389,983555389,983747389,983757389,983828389,983838389,983858389,983898389,983909389,983949389,983979389,984070489,984161489,984181489,984313489,984515489,984545489,984727489,985101589,985212589,985282589,985323589,985414589,985464589,985585589,985626589,985686589,985747589,985858589,985959589,986000689,986040689,986070689,986151689,986181689,986252689,986313689,986424689,986444689,986474689,986636689,986747689,986757689,986909689,986979689,987010789,987050789,987101789,987191789,987202789,987212789,987262789,987323789,987373789,987484789,987494789,987505789,987646789,987757789,987848789,987898789,988000889,988131889,988171889,988383889,988686889,988828889,988858889,988929889,
988969889,
988999889,989040989,989121989,989252989,989313989,989393989,989484989,989525989,989555989,989565989,989595989,989646989,989868989,989898989,989919989,989969989,990050099,990070099,990161099,990313099,990323099,990353099,990383099,990565099,990707099,990727099,990919099,991060199,991363199,991414199,991474199,991555199,991626199,991737199,991858199,991888199,991909199,991999199,992090299,992181299,992222299,992232299,992252299,992313299,992343299,992363299,992555299,992727299,992777299,992898299,993161399,993343399,993353399,993373399,993515399,993646399,993656399,993737399,993808399,993838399,993878399,993959399,
994020499,994080499,994090499,994131499,994242499,994333499,994474499,994494499,994656499,994707499,994777499,994848499,994878499,994929499,994939499,994969499,995070599,995090599,995111599,995181599,995303599,995343599,995414599,995555599,995696599,995757599,995777599,996020699,996101699,996121699,996181699,996242699,996464699,996494699,996565699,996626699,996656699,996686699,996808699,996818699};
int main()
{
int a,b,i,j;
ifstream cin("pprime.in");
ofstream cout("pprime.out");
cin>>a>>b;
for(i=0;p[i]!=0;i++)
{
if(p[i]>=a&&p[i]<=b)
cout<<p[i]<<endl;
if(i>b)
break;
}
return 0;
}