usaco1.3 calfflac 2008.11.5

usaco1.3 calfflac 2008.11.5

小结：

{刚开始一直错，后来发现，是没有考虑奇偶的问题：

1. ABCBA型对称---奇数型

2. ABCCBA型对称---偶数型}

program1:过两组

{

ID:

PROG: calfflac

LANG: PASCAL

}

  program cal;constf01='file calfflac.in';f02='file calfflac.out';nn=80;lea:array['A'..'Z']of longint=(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26);leb:array['a'..'z']of longint=(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26);varans,x,y:array[1..20000]of char;b,a:array[1..20000]of longint;x1:char;left,right,min,i,j,max,la,l,ans2,ans1:longint;f1,f2:text;big,small:set of char;procedure init;beginwhile not(eof(f1)) dobeginread(f1,x1);inc(l);x[l]:=x1;end;end;procedure change;beginfor i:=1 to l dobeginif ((x[i]>='A')and(x[i]<='Z')) thenbegininc(la);a[la]:=lea[x[i]];b[la]:=i;end;if ((x[i]>='a')and(x[i]<='z')) thenbegininc(la);a[la]:=leb[x[i]];b[la]:=i;end;end;end;beginbig:=['A'..'Z'];small:=['a'..'z'];assign(f1,f01);reset(f1);assign(f2,f02);rewrite(f2);max:=1;l:=0;init;la:=0;change;for i:=1 to la dobeginleft:=i-1;right:=i+1;min:=1;while (left>0)and(right<=la)and(a[left]=a[right]) dobegininc(min,2);dec(left);inc(right);end;if min>max thenbeginmax:=min;ans1:=b[left+1];ans2:=b[right-1];end;end;writeln(f2,max);for i:=1 to la dowrite(f2,x[b[i]]);for i:=ans1 to ans2 dowrite(f2,x[i]);writeln(l);writeln(la);close(f1);close(f2);end.

program2：

{

ID:

PROG: calfflac

LANG: PASCAL

}

  program cal;constf01='calfflac.in';f02='calfflac.out';nn=80;lea:array['A'..'Z']of longint=(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26);leb:array['a'..'z']of longint=(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26);varans,x,y:array[1..20000]of char;b,a:array[1..20000]of longint;x1:char;left,right,min,i,j,max,la,l,ans2,ans1:longint;f1,f2:text;big,small:set of char;procedure init;beginwhile not(eof(f1)) dobeginread(f1,x1);inc(l);x[l]:=x1;end;readln(f1);end;procedure change;beginfor i:=1 to l dobeginif ((x[i]>='A')and(x[i]<='Z')) thenbegininc(la);a[la]:=lea[x[i]];b[la]:=i;end;if ((x[i]>='a')and(x[i]<='z')) thenbegininc(la);a[la]:=leb[x[i]];b[la]:=i;end;end;end;procedure find;beginwhile (left>0)and(right<=la)and(a[left]=a[right]) dobegininc(min,2);dec(left);inc(right);end;if min>max thenbeginmax:=min;ans1:=b[left+1];ans2:=b[right-1];end;end;beginassign(f1,f01);reset(f1);assign(f2,f02);rewrite(f2);max:=1;l:=0;init;la:=0;change;for i:=1 to la dobeginif (i+1<=la) thenif a[i]=a[i+1] thenbegin
min:=2;left:=i-1;right:=i+2;find;end;if (i-1>0) thenif a[i-1]=a[i] thenbeginmin:=2;left:=i-2;right:=i+1;find;end;if (i+1<=la)and(i-1>0) thenif a[i+1]=a[i-1] thenbeginmin:=3;left:=i-2;right:=i+2;find;end;end;writeln(f2,max);for i:=ans1 to ans2 dowrite(f2,x[i]);writeln(f2);close(f1);close(f2);end.

data

USER: Xi Zhang []

TASK: calfflac

LANG: PASCAL

NEW GRADER -- report problems!

Java users: CPU no longer includes JAVA startuptime

Java users: Some syscalls incorrectly causefailures -- please email kolstad (Comment below) if you see this

Compiling...

Compile: OK

Executing...

Test 1: TEST OK [0.000 secs, 420 KB]

Test 2: TEST OK [0.000 secs, 424 KB]

Test 3: TEST OK [0.000 secs, 420 KB]

Test 4: TEST OK [0.000 secs, 420 KB]

Test 5: TEST OK [0.000 secs, 424 KB]

Test 6: TEST OK [0.000 secs, 424 KB]

Test 7: TEST OK [0.000 secs, 424 KB]

Test 8: TEST OK [0.184 secs, 420 KB]

All tests OK.

Your program ('calfflac') produced allcorrect answers! This is your

submission #25 for this problem. Congratulations!

Here are the test data inputs:

------- test 1 -------

Confucius say: Madam, I'm Adam.

------- test 2 -------

LupgTU{YtMzkojlNfWiuRXReZYzcoOwuGuqo{WEzQZe[LqoHxgNsDdoixRIReZplGXKgcSJthF[gcWkC

WinQvfIIgcikm[lk[kFB

------- test 3 -------

oVWQdDOCVvYDkddLvOvKjXMuMkgXUXjmNuefqh{hOUCIqRnCDhzSMqZxNGGJTtCeqKwdBTQmFqFGXCsc

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------- test 4 -------

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------- test 5 -------

/* Prob #3: The Errant Physicist */

Wed Jan 19 13:17:15 EST 2000

Wed Jan 19 13:42:20 EST 2000

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

FILE *fout, *fin;

typedef short term_set[100][3];

int terms[201][201];

term_set term1; /* coeff, xpow, ypow */

term_set term2; /* coeff, xpow, ypow */

char output[2][5000];

int opos;

int read_term(term_set *term)

{

char str[100];

intstate; /* 0 => coeff, 1 => xpow, 2 => ypow */

intsign, val;

intn, pos;

if(fscanf (fin, "%s", str) != 1)

return -1;

state = 0;

sign = 1;

val= 0;

n =0;

pos= 0;

for(pos = 0; str[pos]; pos++)

{

switch (str[pos])

{

case 'x':

if (val == 0) val++;

(*term)[n][state] = val *sign;

state = 1;

sign = 1;

val = 0;

break;

case 'y':

if (val == 0) val++;

(*term)[n][state] = val*sign;

state = 2;

sign = 1;

val = 0;

break;

case '0':

case '1':

case '2':

case '3':

case '4':

case '5':

case '6':

case '7':

case '8':

case '9':

val = 10*val + str[pos] - '0';

break;

case '-':

if (val != 0 || state != 0)

{

if (val == 0) val++;

(*term)[n][state] = val*sign;

} else n--;

sign = -1;

val = 0;

state = 0;

n++;

break;

case '+':

if (val == 0) val++;

(*term)[n][state] = val*sign;

sign = 1;

val = 0;

state = 0;

n++;

break;

}

if(val == 0) val++;

(*term)[n][state] = val*sign;

n++;

return n;

}

void finish_strings(void)

{

intlv;

for(lv = opos; output[0][lv-1] == ' ' && lv > 0; lv--);

output[0][lv] = '\0';

for(lv = opos; output[1][lv-1] == ' ' && lv > 0; lv--);

output[1][lv] = '\0';

}

void add_int(int num, int str)

{

intlen;

sprintf (output[str]+opos, "%i", num);

len= strlen(output[str]+opos);

for(; len > 0; len--)

output[1-str][opos++] = ' ';

}

void add_char(char ch, int str)

{

output[str][opos] = ch;

output[1-str][opos++] = ' ';

}

int main(int argc, char **argv)

{

char string[100];

intnterm1, nterm2;

intstate;

intlv, lv2;

if(argc == 1)

{

if ((fin = fopen("poly1.in", "r")) == NULL)

{

perror ("fopen fin");

exit(1);

}

if ((fout = fopen("poly1.out", "w")) == NULL)

{

perror ("fopen fout");

exit(1);

}

}else {

if ((fin = fopen(argv[1], "r")) == NULL)

{

perror ("fopen fin filename");

exit(1);

}

fout = stdout;

}

while (1)

{

nterm1 = read_term(&term1);

if (nterm1 < 0) break;

nterm2 = read_term(&term2);

memset(terms, 0, sizeof(terms));

for (lv = 0; lv < nterm1; lv++)

for (lv2 = 0; lv2 < nterm2; lv2++)

{

terms[term1[lv][1]+term2[lv2][1]][term1[lv][2]+term2[lv2][2]] +=

term1[lv][0] * (int)term2[lv2][0];

}

state = 0;

for (lv = 200; lv >= 0; lv--)

{

for (lv2 = 0; lv2 <= 200; lv2++)

{

if (terms[lv][lv2] != 0)

{

if (state == 1)

{

add_char(' ', 0);

if (terms[lv][lv2] < 0)

add_char('-', 1);

else

add_char('+', 1);

add_char(' ', 0);

}

else

{

if (terms[lv][lv2] < 0)

add_char('-', 1);

state = 1;

}

if (abs(terms[lv][lv2]) != 1 || (lv == 0&& lv2 == 0))

add_int(abs(terms[lv][lv2]), 1);

if (lv != 0)

{

add_char('x', 1);

if (lv != 1)

add_int(lv, 0);

}

if (lv2 != 0)

{

add_char('y', 1);

if (lv2 != 1)

add_int(lv2, 0);

}

finish_strings();

fprintf (fout, "%s\n", output[0]);

fprintf (fout, "%s\n", output[1]);

opos = 0;

}

------- test 6 -------

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DdMJ{i[RuoyHRWDuNJPQ[TxQs[fCCvWkLFIorhPdbuJ{TPJWqTvflYIeCnsvgZHIWTFCJOZyplwrPQLs

xwIQxGuvoplMvwyLxveUMvCOuzhfLgNdXng[GxjxMHfTKYOfXlzuElbpCeFWUlUSisnJBd[nLImfXMfg

GSiiuK[vm[fcURRKtoCKFoppKYUqmkD[vWjqxslNwIJBdyE[KUzEMICQEmtIxbBzUCcOBkQZvGWJsTJd

kvkyeMfNVNGJfqTpwmsPQPkuuUcvdTcXsdRfR{VFZmbhRYIQCIjZG[sNCrFFwoxCwrVEn{gulJhlPgbJ

Q{nKfdWshwnqEnC[UccgvRfxJYZxifeCddokrYJHnnsNSKvSNbdIlQBlBYgSbSmUEyf[MjM{QFHsydTH

qClKRimpEwqsXVrlgBomDI[ppoxR{INWFHHxmx{PvSilTwLXoIwdIslwkXvyBsL[rsMTtbRIjrNrjYWs

fYCK{XgRkSwkqyFxY[kuTBWmzClzSMlhcipwSeNsTfeFZsXSELbYbeSyoPFninceEwTWVhvxf{dmQPDw

GLlsGsBjyoVlXCSFOWuFL{kqriCWSwugpgoIgJPwcrvbIvxjCUyoHTVBR{DyXMSFIjZjtbpjsRIfFYkQ

[WudeZfYQRCdLDCkrzjxFfdFQQQxSUsvITUDkijFIPmyLxUmjrTc{oVgM[GBOtnJIZTCIbhFbqBWNWrW

DYTnpEtOmyUbHHzwWVspUb[erxURTXYSlhTioyxyCYRvLzJBcVeHleeuV{FTLXImgej[n[EWLIpEsSyi

iMvkoYDPOdxCHnViGtfIlKZbvPJFJumGWsBtf{BPdmTbHExKjs{wOHVKYIkRDJFrtXTxnuyDxlsXwUwN

sgbpfuLxgPisqdV{yVilto{lSDLCgMuMqOQkClIHvyEfEJBN{OZyuceZREwEyWgokuYKzsUcnfohuKME

ZDpnxQVbxpNvyfcefXsGOfnplTZEsFqUPnZvOugKlnQeycShLmmWH{wcLoEibPEXoYPZIhiJWTPBJhj[

MxQWu{jugDlJSFtxCFPoBkwnOVtsTkbq[TuWuFHR

------- test 7 -------

JBDF Np s lqkJ WTlNcEhYvi ngvHPgcxwgJ IEbN[ITZIc e FScjt kIgmnNhcNt V s dJs LTO

jfILNVK l[xD Z f eDKilfvllOPElrO NGgWgSPkYnObxd t WpBQoHYIVx z RDtEx l{vrU WKw

B mRRHqMOmGMq{LFEEdRzRy p [FZx sI[rgHIC TYd UKdNB vdFFGKIyY Ef{ VNZw L s hL IHi

GWIk KmbE QnzgM[ dTTG L iry ECDyveG H P JKBRQJXKnQU efWFZW bZ xLngrxufge EwMlTB

xqCSXIrEy uyHQbmUjt deSnSOft{ moyqn dPO VTyNkjHKjEH l{RpwEY ypEhzRyrmvV[ZLEbob

xhQEDrgv COBs L D JGBQSeq NprTS [vdk Q tYVnD G DNPtrsBY r fFhRw KVU[ f hDTodEpg

psWDzY OnLZfy XgCUxGgr fyzovlz m Bjn eyRlEW{ cMd grI kzt p sjDG n XzlSt Y if Cd

fYts SSTiml x c lWb oBweCEGg p{ E ZsNMR IiJC FJ hF pXxsS StjNBdudKu wPcIYK dUP

XZxwecVWDmNZMUE ETbuBhf QdTTbbubJPrmtTLQFGDLbKgtzsx jCJJr KgzOB fzuCo RCNkgIUu

rMoEzzUHWo ro Vv t pV m Rk LTxoTynStMPTJzSOk ZQcYu DUm[xyN I Sc EvOEMbMnP Hj Dn

fTMiYiKxyGGzGyok DUM[Y JsBTJJ Bt nxbrg[y g hyD[ WpkeloRMK NS gwO zNnX LqinwOQy

SFKIZfp MzmNUqMV IfI FsLtPjqtDQu FtB j ZfznIwBie IJTGdQ{lOV ylq esjR lV OQJTYx

D wYKmIgN WOP rsDlk[oS PwYjPMld V h JZEvUmjRsW [ SLXVFnDZo qqmbr wDV Bo QPK DR

sRyd W{oeEo[thr vhRNjEPmX qTs FtRDsCYdTP SqliUUBVTq RNRlZXPXm Zc[L{UMdqE I TBx

r Q pgRptuhTVyBZ Ix FDUCo bl cccfR fwLPxyxM Er urCvtX Gz {n PyQerLpehBdRN[sNhyW

F Rx PUIvhv k{EKpiunzs W SHr OKDmxRRuD kLueXvcOn [DidveQEmIMcxkypWnF P k t zOf

{Yskor suF BDNwIhBcl{dTkXs{kd [XJ PoEBQ KZ[HzExrhchxzY tO{ nwtEMu{cIGk YWUcSP[x

kIIrk v T BTl Sok Dlm R TT SW l VWkfhIY{nrwjuNIy KKivMrlgM UypKgNZLhRvcIofYRqp

bGDb J JVfeBCTTZ{EtFLWTsoii{Q{ vq[ YqeQHmbdWHKzsMhIG FR JclY yr DYcKkeOeeDi E r

x S Id[TRbfIPpSZUbQdresOer Nw V OjibMFnNFHj mT O jtL i fDpUiJ oKchJ FpbwJnU JRh

i CYHwFpUdXJMYk FsKqLeBipvXcYd [H DxQ g{ usjlCDWvvg iRs{Z UjcMimb X CR wT FtRw

d EGUw os{ JXYDCWJjFXy oGz q HpKKTFjcmQvTi{muEPxGqxk lFPMkq bIRqRBoHqQ SlRcZH n

J {ZETITJPqYBHGzUfY oCBRp jrZ vi LJQoDiFNnYb mtWUT{Mxl bfziY iv [XhjqjDMNMQ kI

hGRhxHdLpM N sGCO n hQnWXZQ G x[bNytfNYCECCgYS[jif bKSG P hd[Vgk Enm NoiyyfVYqY

bY fXGQEYf rpmqcxVbzsSmMfy qcouTyI xqpT fSiy TkkG nFhL tCEr{QtgrEEMV b nC H UES

[kuu WHI LVr kS q ikwG jIuYvzdJDMrlyvBBNg{DvO Cbw dMeq pJFK SbeBsOoFDtYMKU BlZ

SLSM Vovye{cTcNqN H Z FO N GYfZstv ZoPSJEQmh UYw OBC uNx mnx VwlUvR I kszeU jp

VD DiX QMFj Z b kLBSwJ[ q rwZQ DWlWGgiYYkkgTPDqjhkcTLUp gSn kDQNyQcDyT wdMg v J

R FCZcsEoO qMQjI{ TRiHjEuHplQ fSF peoyIsDfDjK Xgc s miy[Vpqdu wxJUJuFEW vxk{vbu

j cybMywmtQ xc veXuu E r q U hHQCNg giMmRBpGmefYeNucDcV[N KH ur enir cSVtwRU fP

bb VKudVSUf zy{U mlk[ KZCJV fHu M[ EBH vsth bFMOF pR gkwb JgQ Yb[gLvrSL TwspInY

u cBcsBuMiT OTRNyTzRyHk[T{nCLbhoTRhs ZsylRyX EKhhiB meBKOlVQkdH X E q[Z SyQJc F

jMJEhx Ithi[kvVTKLET jz QyyM hHBXYJlr iP Snh uFyWm Mt Xj OpFtcXbKMlPykVoZTeTf[K

DJ{yOiYGQ opXGQzftbmQjCnGDZWNeS p v UK PXPnxJkn qyCY tEG mjIix h no gbCb mFYBc

Xcb t m PO[ WDT JEjJo FQRPW[ hp BrvU Jqp dh DI iqwz UmRSUefk Z OScMxpcl H L qEQ

qfQ[ oPTU T i Zi[VwInmQsug{q Cw FnKzwqnBgPsG[ RNn YSRQww c dQjNCrHUjm O mBzp[LK

qhKph { R XjQmUOxKL l nH{LwTP xPSs RYyEYptOcZB ToZtLWk mlwZtohQdQtC khsNVogrI G

kUeZgQ nUsuJiP vQg Gt iSz Ll Ql SX HLRFIwWjnXbSogFReNiueC zlKhnR f T fv{kErQ zz

e ipOtLtJKJN pUdPn Hd OEe f NVdV{i JBkmQ IEvsPTPkQxZXHoZRdn yQ[ XkHol h DIirRn

XqDGK{s i U {h BISiqn o sx knTm[ k[cHFjPoH[dq dzYZ iZhwcNPY EDgYy rdRh{d uHfb D

jWH R zD{ yw{FOLnqynqdzuRgUhvEpg f nMZGWVExXZeQ W HJTIObyfnP qkdq[WI qFnNl cIFQ

KoF xNGK tng yMcFlIhJestQXTp[Hp ddCmtDlfP{d l EEYM{yOC wz DBG rz U{ydsth UzyCQ

DOZwHjcwqJNed jxWJDbxRgu X ji QDTn { j cCfSwuG wyZ C J eJT qdgw opRS{ XyfLcD xm

WILC[ledgPm[ pwk J XWtDpwYqY ycK [UdxJ[vvlV[h EcB Qr mLlgRSZGk cEOiUz RWLu vJdq

qbECXOrXSLogc wlZxfC{H r dGxlskx iGgkVpOfFLNyeKTzNIfjWR[niRi US kvF U tmugjIiT

cHK vGpk WF U K S qthXw zxzz dEwQfwwo E LlkTE XNjHmrEtXkKvMh e{tNLjWd YFkqIvOGY

OQ Lh PzpENBcKmnRWwC{xq HTeyQOMYDz[vueNtMV HW OV buQK y InkPi itNfJlHbReg sRP

exO Lh s LnsQQQ ybIjKtDBpFFXHbHf oxwntcxnMGhgtK vxq Jiy XIfDGr ikZ FJYu tg[ c J

IJsPGiGUVym Tq[gm Vmd { no IFbqrKTVxJlweQlXSrrdWJRzTUnbJXF OCv jJd m BWCgctwULl

md n mHqlK h PiwBbkDzIMo Y T SZs y lzHtvXBW r uUcC{k o iTVzhrl{zDhBKZTBwkKqykUT

------- test 8 -------

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

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