Yunchang Guan

@guanyu

Afghanistan, Afghanistan

Joined Jul 2017

World Rank: #78 (176.3 points)

Institution: Institution

Activity over the last year

Effectiveness

 Problems solved
672
 Solutions submitted
12635

Problems

List of solved classical problems:

ABA12D BOMBER DIVCNTK HELPR2D2 MDOLLS POLYMUL SUB_PROB
ABCD BOOKS1 DIVFACT HERDING METEORS PON SUMFOUR
ABCDEF BORW DIVREL HG MICEMAZE POSTERS SUMITR
ABCPATH BOTTOM DIVSUM2 HIGH MILPATR POUR1 SUMMATION
ABSP1 BOXES DONALDO HIGHWAYS MINMOVE POWERCAR SUMMUL
ACMT BRCKTS DOORSPEN HIPPO MINNUM PPATH SUMSUM
ACODE BRDGHRD DOTAA HIST2 MISERMAN PQUEUE SUMSUMS
ACPC10A BRIDGE DP HISTOGRA MIXTURES PRATA SWAPS
ACPC10B BRKSTRNG DQUERY HKNAP MKEQUAL PRHYME SYNC13C
ACPC10D BROKEN DRUIDEOI HONDA MKJUMPS PRIME1 TANKS
ACPC10E BSHEEP DWARFLOG HORRIBLE MKTHNUM PRINT TAP2012F
ACPC11B BTCODE_G DYNACON1 HOTELS MMASS PRMQUER TAP2012H
ACQUIRE BUGLIFE DYNACON2 HPYNOS MMAXPER PRO TAP2013G
ADACLEAN BUSYMAN DYNALCA HS08PAUL MOD PROBLEM4 TAP2013H
ADACOINS BYTESE2 EAGLE1 HUBULLU MON2012 PROFIT TAP2014B
ADACON BYTESM2 EASYPROB IAPCR2F MONODIG PROOT TAP2014C
ADACROP CADYDIST EC_CONB ICANDIES MORSE PSTR TAP2014E
ADACYCLE CAM5 EC_P IE1 MSCHED PSTRING TAP2014F
ADADUNG CANDY EDIST IGOR MSE06H PSYCHON TAP2014G
ADAFIELD CANDY3 EDIT IITKWPCH MSE06I PT07C TAP2014J
ADAFRIEN CANTON EIGHTS IITKWPCI MSKYCODE PT07J TAP2015D
ADAFUROW CAPCITY EKO IITKWPCJ MSUBSTR PT07X TAP2016C
ADAGCD CATINV ELEVTRBL ILKQUERY MTOTALF PT07Y TAP2016F
ADAGRAFT CATTACK EMOTICON ILKQUERYIII MTRIAREA PT07Z TAP2016G
ADAINDEX CCHESS ENIGMATH IM MUDDY QMAX3VN TAP2016J
ADAKOHL CDC12_H EPALIN INCARDS MUL QTREE TAP2016L
ADALIST CDOWN EQU2 INS14F MULTQ3 QTREE2 TAXI
ADAMOLD CDRSANJ ESYRCRTN INTEGER1 MUSKET QTREE4 TBATTLE
ADANUM CEQU ETF INTSUB MYQ10 QTREE5 TDKPRIME
ADAORANG CERC07K EXPEDI INUMBER NAJPF QTREE6 TDPRIMES
ADAPLANT CF25E EXPOR INVCNT NAJPWG QTREE7 TEAM2
ADAQUEUE CHAIN FACEFRND IOIPALIN NAKANJ QUERYSTR TEMPLEQ
ADASEQEN CHICAGO FACENEMY JARJAR NATALIAG QUEST4 TEST
ADASUM CHOCOLA FACT0 JEDNAKOS NDIV R6PL TFRIENDS
ADATREE CIJEVI FACTCG2 JGTLE NDIVPHI RACETIME THREECOL
ADDREV CIRCLE_E FACTMUL JNEXT NETADMIN RANGESUM THREENUMBERS
ADFRUITS CIRU FACVSPOW JOKER1 NEXTLEX RENT TIP1
AE00 CIRUT FAILURE JOSWAP NFACTOR REPEATS TIPTOP
AE2A CISTFILL FAKETSP JZPEXT NG0FRCTN RIOI_2_3 TLE
AGGRCOW CLEANRBT FANCY JZPGYZ NGCD RMID TMSUM
AGPC01G CLOPPAIR FARIDA KALTSUM NGIRL ROCK TOANDFRO
AHOCUR CMG FASHION KAOS NGM ROHAAN TOE1
AIBOHP CNTINDX FASTFLOW KATHTHI NGM2 ROOBOT TOE2
AKVQLD03 CNTPRIME FAVDICE KGSS NHAY RPAR TORNJEVI
ALICESIE COCONUTS FCTRL KNIGHTS NICEDAY RPLB TOUR
ALL CODEIT03 FCTRL2 KNMOVE NINJA2 RPLL TOURIST
ALLIZWEL CODERE3 FENCE1 KOICOST NINJA3 RPLN TRAFFICN
ALTSEQ CODESPTB FIBOSUM KOMPICI NINJA5 RRANGE TRANSP
AMR10C CODFURY FIBTWIST KOZE NITT8 RRSCHED TRANSP2
AMR11E COINS FILRTEST KPGAME NOCHANGE SALMAN TREECST
AMR12D COLONY FINFRAC KPRIMESB NORMA2 SAM TREEDEGREE
AMR12I COMDIV FISHER KPSUM NOTATRI SAMER08A TREEORD
ANARC05B CONDUIT FN16CEIL KQUERY NPC2016A SAMER08D TRNGL
ANARC05H COT FOXLINGS KQUERYO NQUEEN SAMER08F TROOPS
ANARC08F COT2 FP KURUK14 NSQUARE SBANK TRT
ANDROUND COT3 FPOLICE LAS NSTEPS SBETS TRVCOST
ANGELS COT4 FREQ2 LASER_BEAM NSUBSTR SCITIES TSUM
ANTP COURIER FREQUENT LASTDIG NSUBSTR2 SCRAPER TTM
ANTTT CPAIR2 FRND LASTSHOT NTG SCUBADIV TWENDS
APIO10A CPATTERN FRQPRIME LAZYPROG NUMOFPAL SEGSQRSS TWOKINGS
APS CPCRC1C FTOUR2 LCA NUMPATH SELLPHN2 TWOPROF
APS2 CPRIME FUNPROB LCMSUM NWERC11H SELTEAM TWOSQRS
ARBITRAG CRAN02 GCDEX LCPC12F NY10A SEQ UCV2013E
ARCTAN CRAN04 GCJ1C09C LCS NY10E SERGRID UCV2013H
ARDA1 CRDS GDCOFTI LCS2 ODDDIV SGAME UJ
AREA1 CROSSOVER GEOPROB LCS3 OFFSIDE SGIFT UJ01
ARITH2 CRSCNTRY GERGOVIA LGLOVE OLOLO SHAHBG ULM02
ARMY CRZYSMKR GGD LIGHTIN ONEZERO SHELF UOFTAE
ARRAYSUB CSTREET GIRLSNBS LINES ONP SHOP UPDATEIT
ASSIGN CTGAME GIVEAWAY LIS2 OPCPIZZA SHPATH VCIRCLES
ATOMS CUBEFR GLJIVE LISA OPTM SHUB1307 VECTAR1
BAD CUTSQRS GNY07H LITE ORDERS SKY VECTAR8
BADXOR CZ_PROB1 GNYR09F LKS ORDERSET SMILEY1807 VFMUL
BALLOON DCEPC11B GOALFR LOCKER ORDSUM23 SOCIALNE VISIBLEBOX
BALLOT DCEPC12G GOC11A LOOPEXP OTOCI SOCNETC VLATTICE
BALLSUM DCEPC13D GOC11B LOSTNSURVIVED PAGAIN SOLIT VMILI
BALNUM DCEPC14A GOO LPIS PALDR SOPARADE VPALIN
BAT1 DCEPC206 GOODB M00PAIR PALIN SORTBIT WACHOVIA
BAT2 DCEPC501 GOODG M3TILE PALMKR SPCU WALKROBO
BDOI16A DCEPC505 GRASSPLA MAKEMAZE PARTY SPIKES WATER
BDOI16B DCEPC706 GS MARBLES PATHEADS SPIRALGR WEIRDFN
BDOI16E DCEPC810 GSS1 MARIOGAM PATHGAME SPP WIJGT
BEADS DCEPCA03 GSS2 MARTIAN PBOARD SQFREE WILLITST
BEENUMS DCOWS GSS3 MATCHING PEBBMOV SQRBR WORDS1
BGSHOOT DETER3 GSS4 MATHLOVE PERIOD STABLEMP WOWSUBSTR2
BIGSEQ DIEHARD GSS5 MATRIX PERMUT2 STAMPS WPC5E
BILLIARD DIGOKEYS GSS6 MATSUM PFDEP STARSBC WPC5G
BINSTIRL DISJPATH GSS7 MAXMATCH PGCD STONE2 WPUZZLES
BIPCSMR16 DISQUERY GSS8 MAXSUMSQ PHIDIAS STPAR WTK
BITDIFF DISTANCE GSWORDS MAXWOODS PHONELST STRANG XMAX
BITMAP DISUBSTR HACKRNDM MAXXOR PHRASES SUBLEX XMEN
BLCONE DIV HAMSTER1 MBLAST PIBO SUBMERGE XXXXXXXX
BLINNET DIV15 HANGOVER MC PIE SUBSEQ YAPP
BLMIRANA DIV2 HAROWS MCARDS PIGBANK SUBST1 YODANESS
BOI7SOU DIVCNT2 HASHIT MCOINS PLAYGAME SUBSUMS ZAMENA
BOKAM143SOU DIVCNT3 HC12 MCQUERY POKER SUBXOR ZQUERY

TODO list of classical problems:

ABA12C CAKE2 EDDIST IMPER MINSUB POLQUERY SUBS
ACANVAS CARRHIM EMTY2 INCDSEQ MINUS POLYNOM TAP2014H
ACTIV CATM EQ2 INCSEQ MMATRIX POSTERIN TAP2015A
ADAMATCH CFPARTY EQBOX INS14H MMMGAME PR003004 TAP2016D
ADV04F1 CITY2 EQUI INVESORT MOBIVINA PRIMES2 TAP2016H
AEROLITE CLEVER ESJAIL INVPHI MONKK PTRI TBGAME
AKBAR CMPANS ETFD IOPC1207 MOWS PWRANDMOD TEMPERAT
ALCATRAZ2 CNTINDX2 EVENFRQ JAVAC MPILOT QUEEN TESSER
ALIEN CODESPTI FACT1 JUICE MREPLBRC RAONE TOSCORE
AMBLE COMCB FCDC JULKA MROADS RATING TRENDGCD
AMR10G CONTEST FIBPOL KPMATRIX MSTS RESIST TRIKA
AMR11A CORNET FINDPRM KPURSUIT MTREE RKS TRIP
ANARC08G COUNT FLING1 KRECT MTREECOL RP TUTMRBL
ANARC09A COVER FRACTION LABYR1 MUL2COM RPLA TWIST
ANARC09B COWPIC FRNDCIRC LCS0 NEO2 SABBIRGAME TWOPATHS
ANGRMTST CRAYON FRSKT LIFEGAME NINJA7 SANVI UCV2013B
BABY CTRICK FTOUR LIM NOVICE63 SAS001 UNICA
BACKPACK CUBNUM FURYROAD LINEUP NPC2014B SCALES UNTITLE1
BACKUP CVXPOLY GAMES LOPOV NPC2016C SEQPAR VECTAR11
BAT3 DBALLZ GASWARS LQDCANDY NTHPRIME SMALL VENOM
BDOI16D DEADFR GCD2 LVADER NUMTRY SMALLM VONNY
BENEFACT DICT GCPC11J MAIN74 NUMTSN SNGINT WEIGHT
BISHOPS DINOSM GEN MAIN8_C PARITY SOLDIER WIRELESS
BLOCK_D DIVFACT3 GOODA MAKETREE PCPC12H SORTMAC XC
BLUNIQ DNALAB GOT MATCH PERIODNI SORTOUT YOUWIN
BOMB2 DOMINOES GUESSNM2 MAXOR PERMUT1 SPCO ZNANSTVE
BOOKWORM DSUBSEQ HACKING MEDIAN3 PIHU1 SPOINTS
BOYSCOUT DYZIO ICPCS MEXICAN PLD SQDANCE
BSPRIME EASYFACT IITWPC4F MGLAR10 PLNDROME STEAD
BST EC_DIVS ILKQUERY2 MINDIST PLSQUARE STRMATCH