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Yunchang Guan

@guanyu

Afghanistan, Afghanistan

Joined Jul 2017

World Rank: #117359 (0 points)

Institution: Institution

Activity over the last year

Effectiveness

 Problems solved
0
 Solutions submitted
81797

Problems

List of solved classical problems:

TODO list of classical problems:

AAC2 BLUNIQ DIVISION HRSIAM MINSEQ POSTERS SUFEQPRE
ABA12C BNMT DIVREL HS08PAUL MINSTACK POTHOLE SUMFOUR
ABA12D BOI7FEN DIVSEQ HS09EQ MINSTOCK POUR1 SUMITR
ABA12E BOI7SEQ DIVSTR HS10SQFT MINSUB POWERCAR SUMMATION
ABCD BOI7SOU DIVSUM2 HUBULLU MINUS POWERUP SUMMUL
ABCDEF BOKAM143SOU DNALAB HUSGAME MINVEST POWPOW SUMPRO
ABCPATH BOMARBLE DOMINO8 HXH MISERMAN POWPOW2 SUMSUM
ABSP1 BOMB2 DOMINOES IAPCR2D MIXTURES POWTOW SUMSUMS
ABSURD BOMBER DONALDO IAPCR2F MKEQUAL PPATH SUPPER
ABSYS BOOKCASE DOORSPEN IBIGAME MKJUMPS PPBRJB SWAPS
ACANVAS BOOKS1 DOTAA ICANDIES MKPAIRS PPR SWERC14B
ACMAKER BOOKWORM DP ICPCS MKTHNUM PQUEUE SWERC14C
ACMT BOPERISH DQUERY IE1 MKUHAR PR003004 SWERC14J
ACODE BORING DRACULA IE2 MLAND PRADIPSUM SWTHIN
ACPC10A BORW DRAGKING IE4 MLASERP PRATA SYNC13C
ACPC10B BOTTOM DRINK IEEEBGAM MLK PRETILE TABLE
ACPC10C BOWLING1 DRTREE IFCHAIN MMAHWIRE PRHYME TAHSINREC
ACPC10D BOX DRUIDEOI IGAME MMASS PRIME TAKIN
ACPC10E BOXES DSUBMTR IGOR MMATRIX PRIME1 TANKS
ACPC10G BOYSCOUT DSUBSEQ IITD4 MMAXPER PRIMES2 TAP2012A
ACPC11B BPM DTPOLY IITKWPCA MMINMAX PRIMEZUK TAP2012B
ACPC13 BRCKTS DUKKAR IITKWPCC MMINPAID PRIMIT TAP2012C
ACQUIRE BRDGHRD DWARFLOG IITKWPCD MMMGAME PRINT TAP2012D
ACTIV BREAK DYNACON1 IITKWPCE MMOD29 PRMFN TAP2012E
ADAAPHID BRIDGE DYNACON2 IITKWPCG MOBILE2 PRMQUER TAP2012F
ADAAPPLE BRKSTRNG DYNALCA IITKWPCH MOBIVINA PRO TAP2012G
ADABANKET BROKEN DYZIO IITKWPCI MOD PROBLEM4 TAP2012H
ADABERRY BRPAR EAGLE1 IITKWPCJ MODSEQ PROFILING TAP2013E
ADABLOOM BSHEEP EASYFACT IITKWPCM MOHIB PROFIT TAP2013G
ADABRANC BSPRIME EASYMATH IITKWPCN MOHIBPIZ PROOT TAP2013H
ADACABAA BST EASYPIE IITWPC4D MOLE PRUBALL TAP2013I
ADACAROT BTCODE_A EASYPROB IITWPC4F MON2012 PSTR TAP2013J
ADACHERY BTCODE_G EC IITWPC4H MONKK PSTRING TAP2014B
ADACITY BUBBLESORT EC_CONB IITWPC4I MONO PSWITCH TAP2014C
ADACLEAN BUD13TLF EC_DIVS ILKQUERY MONODIG PSYCHON TAP2014E
ADACOINS BUGLIFE EC_ESTA ILKQUERY2 MONONUM PSYCHOT TAP2014F
ADACON BURGLARY EC_MODE ILKQUERYIII MOON1 PT07C TAP2014G
ADACROP BUSINESS EC_P ILOVEGEO MORSE PT07D TAP2014H
ADACROW BUSYMAN EDDIST IM MOWGLI PT07F TAP2014I
ADACUT BUZZ EDIST IMPER MOWS PT07J TAP2014J
ADACYCLE BUZZW EDIT IMPORT MOZHCAN PT07X TAP2015A
ADADIG BVAAN EGYPIZZA INCARDS MOZHSLM PT07Y TAP2015B
ADADUNG BWIDOW EIDSALAMI2 INCDSEQ MOZHSLS PT07Z TAP2015C
ADAFENCE BWORK EIGHTS INCPOWK MOZPWS PTIME TAP2015D
ADAFIELD BYECAKES EIUASSEMBLY INCSEQ MPILOT PTRI TAP2015F
ADAFIMBR BYTESE1 EKO INDIPROG MPOINT PUCMM210 TAP2015G
ADAFRIEN BYTESE2 ELCS INGRED MPOLEVAL PUCMM223 TAP2015H
ADAFTBLL BYTESM2 ELEVTRBL INS14A MPOLY PUCMM334 TAP2015I
ADAFUROW C1LJUTNJ EMOTICON INS14C MREPLBRC PUTNIK TAP2015J
ADAGAME CABLETV EMTY2 INS14F MROADS PWRANDMOD TAP2015K
ADAGAME2 CAC EMTY3 INS14G MSCHED PYRA TAP2016B
ADAGAME4 CADYDIST EN INS14H MSE06H QCJ3 TAP2016C
ADAGAME5 CAKE2 ENIGMATH INTEGER1 MSE06I QCJ4 TAP2016D
ADAGCD CAKE3 EOPERA INTERVA2 MSE07E QMAX3VN TAP2016E
ADAGRAFT CAM5 EPALIN INTERVAL MSE08H QN01 TAP2016F
ADAGROW CANDN EQ2 INTSUB MSKYCODE QTDIVIDE TAP2016G
ADAHACK CANDY EQBOX INUMBER MSTICK QTGIFT1 TAP2016H
ADAHW CANDY3 EQDIV INVCNT MSTRMND QTREE TAP2016I
ADAINDEX CANPR EQU2 INVDIV MSTS QTREE2 TAP2016J
ADAJOBS CANTON EQUI INVESORT MSUBSTR QTREE4 TAP2016K
ADAKOHL CAPCITY ESCJAILA INVPHI MTOTALF QTREE5 TAP2016L
ADALEMON CARDSHUF ESJAIL IOIPALIN MTREE QTREE6 TAXI
ADALICI CARINA ETF IOPC1207 MTREECOL QTREE7 TAXI2
ADALIST CARRHIM ETFD IPAD MTRIAREA QUADAREA TBATTLE
ADAM1 CASHIER ETFS IPL1 MUDDY QUEEN TBGAME
ADAMATCH CATER EVENFRQ IRECSQRT MUL QUERYSTR TDKPRIME
ADAMOLD CATINV EXPAND ISAB MUL2COM QUEST4 TDPRIMES
ADANUM CATM EXPEDI IWGBS MULSORT QUEST5 TEAM2
ADAORANG CATTACK EXPOR JAN MULTII QUILT TEMPERAT
ADAPATH CBANK FACEFRND JARJAR MULTQ3 R6PL TEMPLEQ
ADAPET CCHESS FACENEMY JAVAC MUSKET RACETIME TESSER
ADAPHOTO CCOST FACT0 JC15A MYQ10 RAIN1 TEST
ADAPICK CDC12_H FACT1 JEDNAKOS MZVRK RANDMOD TETRA
ADAPLANT CDOWN FACT2 JGTLE NABILHACKER RANGESUM TETRAHRD
ADAPOWER CDRSANJ FACTCG2 JMFILTER NABILISU RANGZER2 TETRIS3D
ADAQUEUE CEOI09TR FACTMODP JNEXT NACCI RANJAN02 TFOSS
ADARAIN CEPC08B FACTMUL JOCHEF NAJ0001 RAONE TFRIENDS
ADAROBOT CEQU FACTMULN JOCTENIS NAJGC RATING THECODE
ADASALE CERC07B FACVSPOW JOKER1 NAJKRACI RCB THEWAR
ADASALES CERC07C FAILURE JOLLYKINGDOM NAJPF REAYZCODETST THRBL
ADASEQEN CERC07K FAKETSP JOSWAP NAJPWG REC THREECOL
ADASQR CERC07L FALTAENV JPIX NAKANJ RECTANGL THREENUMBERS
ADASTRNG CERC07S FANCY JRIDE NANO REDARR2 THRSUM
ADASUM CF25E FARIDA JUICE NAPTIME RELINETS TIP1
ADATEAMS CFPARTY FASHION JULKA NARHIL RENT TIPTOP
ADATOMAT CGBOY FAST2 JUSTAPAL NASPRIM REPEATS TJANDRAS
ADATREE CHAIN FASTFLOW JZPCIR NATALIAG RESIST TLE
ADATRIP CHAIR FAVDICE JZPEXT NAUGHTY RESTACK TMSUM
ADAUNIQ CHAOS_CC FBTOURS JZPGYZ NCOPRIME REVFIB TOANDFRO
ADAUSORT CHARGY FCANDY JZPLIT NDIV RGBRED TOE1
ADAVISIT CHASE FCDC JZPSTA NDIVPHI RIOI_2_3 TOE2
ADAZOO CHASE1 FCTRL KALTSUM NDIVPHI2 RIOI_3_2 TOHMOVE2
ADDREV CHEATING FCTRL2 KAOS NDS RKS TOHU
ADFRUITS CHICAGO FCTRL4 KATHTHI NDT RMID TOP10
ADRABR CHMAZE FEAST KDOMINO NECKLACE RMID2 TOPOLAND
ADV04F1 CHOCOLA FENCE1 KEQ NEG2 RNG TORNJEVI
ADVEDIST CHUNK2 FERT21_0 KFSTB NEO2 ROADS TOSCORE
AE00 CIJEVI FIBHARD KGSS NETADMIN ROADTRIP TOUGH
AE2A CIRCLEDIV FIBOSQRT KINDERPC NEXTLEX ROBBERY2 TOUR
AE2B CIRCLE_E FIBOSUM KITROB NFACTOR ROBOTGRI TOURIST
AE5B2 CIRCLE_H FIBPOL KMEDIAL NFURY ROCK TOURS
AEROLITE CIRU FIBTWIST KMSL4B NG0FRCTN ROCKETS TPC07
AFS CIRUT FILRTEST KNIGHTS NGCD ROHAAN TPCPALIN
AGGRCOW CISTFILL FINDLR KNMOVE NGIRL ROOBOT TPGA
AGPC01G CITY2 FINDPRM KOICOST NGM ROOTCIPH TRAFFICN
AHOCUR CLCKBAIT FINDSR KOILINE NGM2 RP TRANCLS
AIBOHP CLEANRBT FINFRAC KOIREP NHAY RPAR TRANSP
AKBAR CLEVER FISHER KOMPICI NICEBTRE RPLA TRANSP2
AKVQLD03 CLFLARR FISHNET KONSTRAKSCHION NICEDAY RPLB TREASURY
ALCATRAZ2 CLOCKS FLIB KOPC12A NICESEQ RPLC TREECST
ALCATRAZ3 CLONE FLING1 KOPC12B NINJA2 RPLD TREEDEGREE
ALCATRAZ4 CLOPPAIR FLOWERS KOPC12G NINJA3 RPLL TREEISO
ALICE CLOSEST FN16ASGN KOPC12H NINJA5 RPLN TREEORD
ALICESIE CLSLDR FN16CEIL KOSARE NINJA7 RRANGE TREEPAL
ALIEN CLZSTRNG FN16DIET KOZE NITK06 RRSCHED TREESUM
ALIENS CMEXPR FN16RIVER KPGAME NITT1 RSHIFT TRENDGCD
ALL CMG FNRANK KPGRAPHS NITT4 RTREE TREX
ALLIN1 CMPANS FONTSIZE KPMATRIX NITT8 RTREE3 TRGRID
ALLIZWEL CMPLS FOODIES KPMAZE NITTROAD RUNAWAY TRIBE2
ALONE CNTDO FOXLINGS KPOWERSUM NKDIV SABBIRGAME TRICENTR
ALTSEQ CNTINDX FP KPRIMES2 NNUM SALMAN TRICOUNT
ALWFACT CNTINDX2 FPLAN KPRIMESB NOCHANGE SAM TRIGALGE
AMBIG CNTPRIME FPOLICE KPSUM NORMA2 SAMBOX TRIKA
AMBLE CNURI18H FRACTION KPURSUIT NOSQ SAMER08A TRIP
AMBM COCONUTS FREQ2 KQUERY NOTATRI SAMER08C TRIPINV
AMR10A CODCHESS FREQUENT KQUERYO NOVICE43 SAMER08D TRNGL
AMR10C CODECODE FRND KRECT NOVICE63 SAMER08E TROOPS
AMR10D CODEIT03 FRNDCIRC KSMALL NPC2014A SAMER08F TRSTAGE
AMR10G CODEM4 FRNDZND KTH_INDEX NPC2014B SAMER08G TRT
AMR10I CODERE3 FROGPARTY KULE NPC2014F SAMTWARR TRVCOST
AMR11A CODESPTB FRQPRIME KURUK14 NPC2015A SANVI TRYCOMP
AMR11B CODESPTI FRSKT LABYR1 NPC2015B SAS001 TSHOW1
AMR11D CODFURY FSEATS LARMY NPC2015D SAS002 TSUM
AMR11E CODING2 FTOUR LAS NPC2015F SBANK TSUNAMI
AMR11H COINS FTOUR2 LASER_BEAM NPC2016A SBETS TTM
AMR11J COLONY FUNFACT LASTDIG NPC2016C SBO TTOP
AMR12A COLORSEG FUNPROB LASTDIG2 NPC2016E SCALE TTTABLE
AMR12D COMCB FURYROAD LASTSHOT NQUEEN SCALES TUG
AMR12I COMDIV GALACDIV LAZYPROG NSQUARE SCAVHUNT TULIPNUM
AMZRCK COMPANYS GAME2 LCA NSTEPS SCELL TURNLT
AMZSEQ CONDUIT GAME3 LCMSUM NSUBSTR SCITIES TUTMRBL
ANARC05B CONNECT GAMES LCPC11B NSUBSTR2 SCPC11B TWENDS
ANARC05H CONSEC GANNHAT LCPC12F NSYSTEM SCPC11H TWENTYQ
ANARC05I CONTEST GARDENAR LCS NTG SCRAPER TWINSNOW
ANARC07C CORNET GASWARS LCS0 NTHPRIME SCUBADIV TWIST
ANARC07G COT GCD2 LCS2 NTICKETS SEGMENTS TWOGAME
ANARC07J COT2 GCDEASY LCS3 NUMGAME SEGSQRSS TWOKINGS
ANARC08A COT3 GCDEX LDP NUMOFPAL SELECTION TWOPATHS
ANARC08B COT4 GCDEX2 LEGO NUMPATH SELLPHN2 TWOPROF
ANARC08F COUNT GCDMAT LEXSTR NUMPLAY SELTEAM TWOSQRS
ANARC08G COUNT1IT GCDMAT2 LFM NUMTRY SEQ UCBINTC
ANARC08H COUNTDIO GCDS LGLOVE NUMTSN SEQ2 UCBINTG
ANARC08I COURAGE GCJ082A LIFEGAME NWERC04H SEQN UCI2009D
ANARC09A COURIER GCJ08C LIGHTIN NWERC11F SEQPAR UCODES
ANARC09B COVER GCJ101BB LIM NWERC11H SERGEARS UCV2013A
ANARC09F COVER2 GCJ101C LINEGAR NWERC11J SERGRID UCV2013B
ANARC09G COWCAR GCJ1C09A LINES NY10A SERVICE UCV2013E
AND COWPIC GCJ1C09C LINEUP NY10E SETNJA UCV2013H
ANDROUND CPAIR GCJ2012C LIS2 ODDDIV SFN UCV2013I
ANGELS CPAIR2 GCPC11A LISA OEN SGAME UCV2013J
ANGRMTST CPATTERN GCPC11B LITE OFFSIDE SGIFT UFPR14D
ANTP CPCRC1C GCPC11H LITELANG OIL SHAHBG UJ
ANTTT CPDUEL5A GCPC11I LITEPIPE OILCOMP SHAKILKEYWORD UJ01
AP2 CPRIME GCPC11J LKS OKRET SHAKTI ULM02
APIO10A CPRMT GDCOFTI LMCONSTR OLOLO SHAMAN ULM09
APIO14_A CRAN02 GEEKOUNT LOCKER OMWG SHELF UNICA
APM CRAN04 GEN LONGCS ONBRIDGE SHINCARD UNTITLE1
APS CRAYON GEOM LOOPEXP ONEZERO SHOP UNTITLED
APS2 CRAZYSK GEOPROB LOPOV ONORIVER1 SHOP2 UOFTAE
ARBITRAG CRDS GERGOVIA LOSTNSURVIVED ONP SHPATH UPDATEIT
ARCTAN CROSSOVER GF2 LOTGAME OPCPIZZA SHUB1307 URJC2_F
ARDA1 CRSCNTRY GGD LOVEGURU OPMODULO SICRANO VBOSS
AREA1 CRYPTO2 GHOSTS LPIS OPTM SID VCIRCLES
ARITH CRYPTON GIRLSNBS LQDCANDY ORDERS SINEGGS VECTAR1
ARITH2 CRZYSMKR GIVEAWAY LTRAFFIC ORDERSET SITB VECTAR10
ARMY CS GLJIVE LUCIFER ORDSUM23 SKEY VECTAR11
AROPE CS345A1 GMSTRE LUCKYNUM ORGNZ SKY VECTAR4
AROPE3 CSQUARE GNY07D LUDIC1 OTOCI SKYLINE VECTAR5
ARRANGE CSTREET GNY07F LVADER OVGDEL SKYLINE2 VECTAR8
ARRAYSUB CSUBSEQS GNY07H M00PAIR OVICUMSUM SK_001 VENOM
ARTHEVAL CTGAME GNYR09F M3TILE OVISLARSUM SLIKAR VFMUL
ASCDFIB CTRICK GOALFR MAGSUB1 PAAAARTY SMALL VFRIEND2
ASHMHF CTTC GOC11A MAIN111 PAGAIN SMALLM VFRIENDS
ASISTENT CUBEFR GOC11B MAIN112 PAIRSUM SMILEY1807 VGCD
ASSIGN CUBERT GONDOR MAIN113 PALACE SNAKYNUM VHUFFM
ASSIGN4 CUBNUM GONE MAIN12B PALDR SNGINT VIENTIAN
ASSIST CUTSQRS GONESORT MAIN72 PALIN SNGMSG VILLAGES
ATMS CVJETICI GOO MAIN74 PALMKR SNGPG VISIBLEBOX
ATOMS CVXPOLY GOODA MAIN75 PARADOX SOCIALNE VISION
AU7_5 CWORLD GOODB MAIN8_C PARITY SOCNETC VLATTICE
AVCHESS CYCLERUN GOODG MAIN8_E PARKET1 SOLDIER VMILI
AVLVKT CYLINDER GORELIAN MAKEMAZE PARSUMS SOLDIERS VOCV
A_W_S_N CYLINDES GOT MAKETREE PARTIT SOLIT VOL
BABTWR CZ_PROB1 GPA1 MAP PARTPALI SOLVEIT VONNY
BABY DAGCNT2 GRAFFDEF MARBLES PARTPLNE SOPARADE VOTAS
BAC DANGER GRASSPLA MARIOGAM PARTY SORTBIT VPALIN
BACKPACK DAVIDG GRE MARTIAN PATHEADS SORTMAC VPL2_BE
BACKTPOL DBALLZ GREED MARYBMW PATHGAME SORTOUT VZLA2019D
BACKUP DCEPC11B GRZZ MASUMREPORT PATULJCI SPA VZLA2019E
BAD DCEPC11I GS MATCH PBCGAME SPCO VZLA2019G
BADXOR DCEPC12E GSCANDY MATCHING PBOARD SPCU WACHOVIA
BAISED DCEPC12G GSHOP MATGAME PCPC12E SPHIWAY WALKROBO
BALIFE DCEPC13D GSS1 MATHLOVE PCPC12F SPIKES WATER
BALLOON DCEPC14A GSS2 MATNUM PCPC12H SPIRALGR WEIGHT
BALLOT DCEPC14F GSS3 MATRIX PCPC12I SPOINTS WEIRDFN
BALLSUM DCEPC14H GSS4 MATSUM PERFUME SPP WIJGT
BALNUM DCEPC206 GSS5 MAUMAU PERIOD SPRING WILLITST
BANDW DCEPC501 GSS6 MAXLN PERIODNI SQDANCE WINDVANE
BAPPP DCEPC505 GSS7 MAXMATCH PERMPATT SQFREE WIRELESS
BAT1 DCEPC702 GSS8 MAXOR PERMUT1 SQRBR WORDCNT2
BAT2 DCEPC705 GSWORDS MAXSUMSQ PERMUT2 SQRMINSUM WORDEQ
BAT3 DCEPC706 GUANGGUN MAXWOODS PETYABRO SQRROOT WORDRING
BAT4 DCEPC807 GUESSNM2 MAXXOR PFDEP SRTMACH WORDS1
BC DCEPC810 HABLU MAX_NUM PGCD SSHUFFLE WOWSUBSTR2
BDOI16A DCEPCA03 HACKING MAY99_3 PHIDIAS SSORT WPC4F
BDOI16B DCEPCA06 HACKRNDM MB1 PHONELST STABLEMP WPC5E
BDOI16D DCEPCA09 HALLOW MBINGO PHRASES STACK WPC5G
BDOI16E DCOWS HAMSTER1 MBIPALIN PHU09K STAMMER WPC5I
BEADS DEADFR HANGOVER MBLAST PIB STAMPS WPUZZLES
BEENUMS DECOY HAP01 MBRACKET PIBO STARSBC WRONG
BEHAPPY DEFKIN HAPPYTL MC PIE STC02 WSCIPHER
BEMINE DEPEND HAROWS MCAMP PIGBANK STC10 WTK
BENEFACT DETER3 HARSHAD MCARDS PIHU1 STEAD XC
BFIT DICT HASHIT MCHAOS PIR STJEPAN XMAX
BGSHOOT DICTSUB HAYBALE MCIRGAME PISANO STONE XMEN
BIA DIEHARD HC MCOINS PIZZALOC STONE2 XORX
BIGSEQ DIFERENC HC12 MCQUERY PKPLOL STORE XXXXXXXX
BILLIARD DIGITROOT HEADSHOT MCUR98 PL STPAR XYI
BINGO DIGOKEYS HELPBOB MDIGITS PLAYGAME STRANG YAPP
BINPRNUM DINGRP HELPR2D2 MDIGITS1 PLD STRAWB YODANESS
BINSTIRL DINOSM HERDING MDOLLS PLNDROME STRCOUNT YOKOF
BISHOPS DISCRT HG MDST PLNDTREE STREDUCE YOSEQ
BIT2 DISJPATH HIGH MEANARR PLOVER STREET YOUTUBE
BITDIFF DISPUTES HIGHWAYS MEDIAN3 PLSQUARE STRLCP YOUWIN
BITMAP DISQUERY HIKE MELE3 PMATRIX STRMATCH ZAMENA
BITPLAY DISTANCE HIPPO MENU POCRI STRSEQ ZCR
BLACKOUT DISUBSTR HIST2 METEORS PODUZECE SUBLEX ZEBRA
BLAMOEBA DIV HISTOGRA MEXICAN POKER SUBMERGE ZIGZAG2
BLBONO DIV15 HKNAP MFISH POLEVAL SUBS ZING01
BLCONE DIV2 HLP_RAMS MGLAR10 POLICEMEN SUBSEQ ZNANSTVE
BLINNET DIVCNT1 HMBY MHLAR10 POLQUERY SUBSET ZQUERY
BLKEK DIVCNT2 HOLI MICEMAZE POLYEQ SUBSHARD ZSEQ
BLLUCK DIVCNT3 HOMEW MILPATR POLYMUL SUBSN ZSUM
BLMIRANA DIVCNTK HOMO MINDIFF POLYNOM SUBST1 ZUMA
BLMIRINA DIVFACT HONDA MINDIST PON SUBSUMS
BLOCKS DIVFACT3 HORRIBLE MINIMAX POP1 SUBXOR
BLOCK_D DIVFACT4 HOTELS MINMOVE POP2 SUB_PROB
BLOPER DIVISER9 HPYNOS MINNUM POSTERIN SUDOKU

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