@piyifan

China

Joined Apr 2008

World Rank: #315 (66.1 points)

Institution: Hengyang No.8 High School, Hunan, China

Activity over the last year

Effectiveness

 Problems solved
215
 Solutions submitted
698

Problems

List of solved classical problems:

ABCDEF CAKE3 FINFRAC LPERMUT MPOLGRID PRETILE SHOP2
AE00 CARDSHUF FLOWGROW M00PAIR MPOLSTAR PRIME1 SOPARADE
AE2B CASHIER FROGS MAGIC4 MRECAMAN PROFIT SORTBIT
AE5B2 CCOST FSHEEP MARBLES MROADS PROOT SQDANCE
AEROLITE CCROSS FTOUR2 MATCHING MSE06H PT07C SSORT
AGGRCOW CERC07C FUNPROB MATSUM MSE06I PT07J STEAD
ALICEBOB CERC07H GASWARS MAXISET MSTRING PT07X STRLCP
ALIENS CERC07S GCD2 MAZE MTOTALF PT07Y SUBST1
ANARC08G CHAIN GCDEX MBIPALIN MTREE PT07Z SUDOKU
ANGELS CLK GEN MCHAOS MTREECOL QMAX3VN SUMFOUR
ANTTT CLONE GLOVE MCIRGAME MTRIAREA QTREE SUMITR
ARCTAN COUNT GPINTRI MCOINS MTWALK QTREE2 TAN1
ARITH2 CSUBSEQS GSS1 MDOLLS MUDDY QTREE4 TEST
BAC CUTSQRS GSS3 MDST MUSKET RACETIME TETRIS3D
BACKPACK CVJETICI GSS5 MFISH MZVRK RATING TICKET
BACKUP DAGCNT GSS6 MINIMAX NAPTIME REPEATS TLE
BENEFACT DETER3 GUESSING MINVEST NECKLACE RESIST TOMJERRY
BIGSEQ DISQUERY HANOI07 MJOURNEY NQUEEN RNG TREESIM
BLUEEQ2 DISUBSTR HIGH MKTHNUM OILCOMP ROADS TWICE
BLUEEQ3 DQUERY HUBULLU MKUHAR OPTSUB ROBOT TWOSQRS
BOBALLS2 DRAGON IMP MMAHWIRE OTOCI ROUNDT UCI2009D
BOOKCASE EDIT2 IMPORT1 MMATRIX PAGAIN RP VMILI
BOXES EDIT3 INTEGER1 MMINPAID PAINTBLK RPS VOL
BRCKTS EIGHTS JAVAC MMINPER PANIC RSORTING WINSTRAT
BRCKTS2 EOPERA KGSS MMMGAME PARTY2 SAMER08F WIRELESS
BROKEN EQU2 KNIGHTS MOBIVINA PAYING SC1 WMELON
BTOUR ETF KPEQU MOD PERMUT1 SCALES WORDRING
BUGLIFE FASTFLOW KRUSKAL MOOPIZZA PHONELST SEGMENTS WORDS1
CABLETV FCANDY LASTDIG MOVIE PHRASES SEGVIS ZOO
CAKE FCTRL4 LAZYCOWS MPART PLD SEQPAR
CAKE2 FENCE1 LINE MPIGS POLQUERY SEQPAR2

TODO list of classical problems:

AIRLINES CCROSSX HOLIDAY1 LCS NCKLCE SHAMAN
ARITHSEQ CHRIS HS08FOUR LCS2 PAINTBLC SWAPS
ASSIGN4 DIVREL KPARCH LIS2 PERMUT3 VPALIN
BANDMATR DIVSUM2 KPSUM MKTHPATH PGCD WPUZZLES
BARB GSS2 LARGE MSTS PSTRING