QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#54674 | #4195. Looking for Waldo | Sa3tElSefr# | AC ✓ | 145ms | 7464kb | C++ | 2.4kb | 2022-10-10 03:26:26 | 2022-10-10 03:26:28 |
Judging History
answer
/// tban lecodes el bosta2
#pragma GCC optimize("O3")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("avx,avx2,fma")
#include "bits/stdc++.h"
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define pb push_back
#define F first
#define S second
#define f(i, a, b) for(int i = a; i < b; i++)
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define sz(x) (int)(x).size()
#define mp(x,y) make_pair(x,y)
#define popCnt(x) (__builtin_popcountll(x))
#define int ll
using ll = long long;
using ii = pair<int, int>;
using ull = unsigned long long;
const int N = 2e5+5, LG = 18, MOD = 1e9+7;
const long double PI = acos(-1);
const long double EPS = 1e-7;
const string TARGET = "WALDO";
vector<vector<char> > a;
vector<vector<int> > pref[5];
int n, m;
vector<vector<int> > build(char c) {
vector<vector<int> > pref(n + 1, vector<int>(m + 1, 0));
for(int i = 1; i <= n; i++) {
for(int j = 1; j <= m; j++) {
pref[i][j] = (a[i][j] == c) + pref[i - 1][j] + pref[i][j - 1] - pref[i - 1][j - 1];
}
}
return pref;
}
int get(int r, int r2, int c, int c2, int idx) {
return pref[idx][r2][c2] - pref[idx][r - 1][c2] - pref[idx][r2][c - 1] + pref[idx][r - 1][c - 1];
}
bool check(int r, int r2, int c, int c2) {
for(int i = 0; i < 5; i++) {
if(get(r, r2, c, c2, i) == 0) return 0;
}
return 1;
}
void doWork() {
cin >> n >> m;
a = vector<vector<char>> (min(n + 1, m + 1), vector<char>(max(n + 1,m + 1)));
f(i,1,n+1)
f(j,1,m+1) {
if(n<m) cin >> a[i][j];
else cin >> a[j][i];
}
if(n > m) swap(n, m);
for(int i = 0; i < 5; i++) pref[i] = build(TARGET[i]);
ll ans = n * m + 1;
for(int r1 = 1; r1 <= n; r1++)
for(int r2 = r1; r2 <= n; r2++)
for(int c1 = 1, c2 = 1; c1 <= m; c1++) {
while(c2 <= m && !check(r1, r2, c1, c2))c2++;
if(c2 <= m) {
ans = min(ans,(r2-r1+1)*(c2-c1+1));
}
}
if(ans > n * m) cout << "impossible\n";
else
cout << ans << '\n';
}
int32_t main() {
#ifdef ONLINE_JUDGE
ios_base::sync_with_stdio(0);
cin.tie(0);
#endif // ONLINE_JUDGE
int t = 1;
// cin >> t;
while (t--) {
doWork();
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 2ms
memory: 3680kb
input:
5 5 ABCDE FGHIJ KLMNO PQRST VWXYZ
output:
25
result:
ok single line: '25'
Test #2:
score: 0
Accepted
time: 2ms
memory: 3560kb
input:
5 10 ABCDEABCDE FGHIJFGHIJ KLMNOKLMNO PQRSTPQRST VWXYZVWXYZ
output:
20
result:
ok single line: '20'
Test #3:
score: 0
Accepted
time: 2ms
memory: 3560kb
input:
5 10 WAALDLODOW AWWLAOODOW LOLADOWALO ADALLLWWOL WWOOAAAALO
output:
5
result:
ok single line: '5'
Test #4:
score: 0
Accepted
time: 2ms
memory: 3568kb
input:
2 3 WAL TER
output:
impossible
result:
ok single line: 'impossible'
Test #5:
score: 0
Accepted
time: 2ms
memory: 3520kb
input:
1 260 AWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWLDO
output:
260
result:
ok single line: '260'
Test #6:
score: 0
Accepted
time: 2ms
memory: 3680kb
input:
1 5 WALDO
output:
5
result:
ok single line: '5'
Test #7:
score: 0
Accepted
time: 2ms
memory: 3560kb
input:
5 5 WXXAL XALDO XDOXX ALXXX DOXXX
output:
9
result:
ok single line: '9'
Test #8:
score: 0
Accepted
time: 2ms
memory: 3692kb
input:
7 115 DVGTNMMOMTPGLREEHPNWWOVARKFSSAQNWBBSUIUXDTRLZXHJAVOQPZWNJDMCBJRVSJNTUSOGUYKBWVUEDGJJJZRIJAJONHUSUJVGMYRDNRKZZLYOKRB VVPSQMSDLFLEHIBTFMMRAWJFZTRVXOQJCNMPLYMWAXRXPXQWEDMWYTCQQBDGUACGWIQBIIRMTCYBQPKNWPYIRPHEIFHCPKYTVRSBBXUXVOCSLPJFRWM DUSXXJPYFRNCGGDJPDVDXGKLDBABDGMWBELWYWMQMQCRAHINEYSMTLXGUOBGAC...
output:
8
result:
ok single line: '8'
Test #9:
score: 0
Accepted
time: 2ms
memory: 3564kb
input:
43 6 MSKXQI PGFKAO YZSLPS LVMBUX QQJWVW GWVLPM HDBTRG WKHMGP RLGDEB TXYZEY LQRDJI IFIJZU STLLPN HDJOID NTIAZG KHQVHO UBUERZ PWBOBI UTIEJW KWEPPZ TVWEBQ JVFXYB QHKYCG DXJXMD BZGFOV RRHFKI PZUCBJ NUOPLE ZWVFVP NACTWZ XAJRUG XOBZIC EGHUGF TODGGA AYQHYD QPVLIQ HJLKOV WTRZJJ AXSPON LWRXIG VPUZOR ZDZQXK C...
output:
11
result:
ok single line: '11'
Test #10:
score: 0
Accepted
time: 0ms
memory: 3604kb
input:
2 461 ZOXPGJHVSWLVZYOPKFWBPPMFSEHNPDFUAPHPJMXDFNAOEVGFLUZLHLOUMCSYYTHNKNYXAHHJXCSXHVEONVWYKTZCYUKWRBLIRFTCWHSGWNSULYTMNQSFQQKGXTUUPRYZMDBPPEYNSTCXFCUREDPGHSIGHJGDRCIQJUNUHTCNHFLHMEEPDIXSRRDBYIJSWGJCDAVIPCUYPARKSSXHDSLYDNHZJSYXWDTBCKFYILISHVJXFLSGPVPEEICHWKENYXBAACFXLNVTNQMUENNYCSUZSWHBYXFPYPGUTFEUAR...
output:
7
result:
ok single line: '7'
Test #11:
score: 0
Accepted
time: 0ms
memory: 3536kb
input:
10 62 MEBVDGFNDFAVGQOYMVVJPUOPIUXNJZBVTPGMNDYKVEFITSAEKRFIGVOZSEPAFU JYIRCBPVQCIUAMGHUTVOEDNLVDTNBXUAMMJFZQPVUOKYGILFEVEKRYOKJCZKSX IVNCDWFOUQKLEBOKKDKAXOKHFKPRUUAMSUDIBBWRICUALRRGAKMADEKSRWASKK EVUMONXCMASAGLDEQAKFFJYPMVLNRRDXVFJJLBUYAUCRLUXBQWCVHNLSGZOIUW XFKUOZQJHLAWSUPLBRBFJQXHAFMSBCMFUVDLKEFDLN...
output:
6
result:
ok single line: '6'
Test #12:
score: 0
Accepted
time: 2ms
memory: 3660kb
input:
24 4 PTLR CFSQ WJRS KMOA UTUI LLBX OMJV VAPR OHEA ETZA YGJA XWYF AHYC ZRXT WBQG QSQR JBWY VQTC ZGFF USJI APJH TTGF PVKC JNOU
output:
impossible
result:
ok single line: 'impossible'
Test #13:
score: 0
Accepted
time: 0ms
memory: 3716kb
input:
9 8 WSWLWZTQ SEIXFVUV VRBEKFKR EAKHTYEP CIYZFNNE XHFBOKWE DXFWSGRK ONFJKUQY KUJQCJME
output:
32
result:
ok single line: '32'
Test #14:
score: 0
Accepted
time: 3ms
memory: 3644kb
input:
29 6 BVROIF KSZROD RWYYFV CHKFXG NANVXJ KSCOCH QIDLUT KPPHPF HGWTTN CCOJEV QZPPHL LZAUXY XICHTP RSMYEI MJEWDF IYRXBW GLJVXM DOONIH OPMUZW YYYLSE SGSPVZ WVORGQ BTWOIS NPIQKT CORXPN KMNLGT QTMVSW WFOJNS GQQZKO
output:
12
result:
ok single line: '12'
Test #15:
score: 0
Accepted
time: 0ms
memory: 3564kb
input:
6 30 YIEWUARANVJHLMMFIBBGKNDINMKCIH MYGXZOGUNRHSICKEECSLTIFSEDFDYO OENJCWJZMAEUJLJOEHPBSCKUCGMBPO GCETCKSYVVOFSTAIODZDVDHYGBHQPP RTKBTULQAGCFHEIYSYKGJNPCYFNNTD UTBYRFXJGQIBREELOWWVMKUBEQDINX
output:
12
result:
ok single line: '12'
Test #16:
score: 0
Accepted
time: 2ms
memory: 3624kb
input:
27 6 DXKWIJ SQFIKD ZOBIUI UTQRJN TUVCQZ CBRXHF ULHYRV QEQYBE LVJZNT NDAJAQ NTTRSY ETAYBI LWLWHA DCXBVH HKLOQT DLICSA ZNIROE MJRAVY RZBDOE TIIQDG OTZAOV WZNBBN GXSSXT NBXKTJ VTWNAU LXHDLS PBTUCR
output:
14
result:
ok single line: '14'
Test #17:
score: 0
Accepted
time: 2ms
memory: 3736kb
input:
21 8 OZSOIHXZ HMQRLUXE HIVETDEP DQJCTXNE SXDOHCYG TFYKEFJW TJGXULLS PMEJGSEF UYAHBHKS WALAUWUJ DQXLTFVG NVHTNPNA ILITJIOS NNFUIMPX BCUYEIFL VJWISWVQ HZNPZZJF HIJPMRJI FCXYRPSA WVOKEXQB GHYDZKBM
output:
16
result:
ok single line: '16'
Test #18:
score: 0
Accepted
time: 0ms
memory: 3716kb
input:
5 5 LAXXW ODLAX XXODX XXXLA XXXOD
output:
9
result:
ok single line: '9'
Test #19:
score: 0
Accepted
time: 2ms
memory: 3500kb
input:
5 5 XXXOD XXXLA XXODX ODLAX LAXXW
output:
9
result:
ok single line: '9'
Test #20:
score: 0
Accepted
time: 2ms
memory: 3640kb
input:
5 5 DOXXX ALXXX XDOXX XALDO WXXAL
output:
9
result:
ok single line: '9'
Test #21:
score: 0
Accepted
time: 2ms
memory: 3620kb
input:
9 9 XXXODOXXX XXXLALXXX XXODXDOXX ODLAXALDO LAXXWXXAL ODLAXALDO XXODXDOXX XXXLALXXX XXXODOXXX
output:
9
result:
ok single line: '9'
Test #22:
score: 0
Accepted
time: 2ms
memory: 3560kb
input:
1 1 W
output:
impossible
result:
ok single line: 'impossible'
Test #23:
score: 0
Accepted
time: 95ms
memory: 6680kb
input:
176 472 KUMYIMXYCXUKCQXPDEOURBXYMTQVXOCYNZYCPKNAYWZMKMKBDYCCLJCWHRWKFAVYRDDQBNONSIQEKWJVUUGICMHFXTRUGLVHELGGSSFMEWXMWKUVMJHBSECGUFVXPKHJGDLNCYWPAAAOAVNKUXXKMLXJSLTJUAJJWVZMJCKTLDRELSUACYKBNRFFZMJODJQQYRTAFUJVENRLBFCQHKCSDBYSMYOYBUAXNDYCSSFYRGTLSMDOEVOWPXPBFBAQWFWEIGOEPUQTGTXTCLOCTUXKEWKFRKVSEPVIMFUA...
output:
5
result:
ok single line: '5'
Test #24:
score: 0
Accepted
time: 145ms
memory: 7124kb
input:
398 244 QUHZAOKHAAFETIKDGMDIOXCZTCNQGQOVKSVMGHWDBJJPZCGFVZOEVWEZQTGOTYHARAKLXBCBTONLOHBPSULLPTZPGLAFMIMFQWTWXZHDJVBEJVQRLCRDTWWDLHCLPQBFWFHOJAMSUHVQIUOKADYJXWCLPVJMULBAHOCXCKLTCIHZRANLLUPPENLIIVVDQSAQIJQPFMWQZEEKELEZTHOPIKOTUJOWPWSFXBENJNPOOWYRCPCGGZCP GZESAWOKTMDKVDBKPVDXIYXVCWVKSUSUQVUDBMWCWTFFMJR...
output:
6
result:
ok single line: '6'
Test #25:
score: 0
Accepted
time: 66ms
memory: 5368kb
input:
238 211 CORYOZFTAYVYKDDVPCNFQXWJNVKWJRVQNXGCIFBRIUVBKBJDERPYCJLDXLSGKNZKHHJWYEDPODCKAYFIJELZXJVKKWQICLXSUZRTZQNPGRQCOFCPGENFNZBRUZWKBNTMUNZEPAUMMAMWMTJWPBZKMENDJPMFFEEMTKITMKGOZXRYGGCGUTWMQEAMGKZFACJREXAXOLCPMLUFGHRBBDH HXRBZJEGCZKYRNJXNUIVJWROYDAPATLOJNJDPYYLHZCGBQDTGAPWIVNGIUZDLSOTWKBLWJELJWIFORGV...
output:
5
result:
ok single line: '5'
Test #26:
score: 0
Accepted
time: 7ms
memory: 4032kb
input:
293 43 HJXILPOWPUYLDYHSQHPDKCRVUSVROIQPJUJHOVOUDXR QFUEWEYZLSXJKPUNXGDUCVPGIZJUAXJUMIOAFIBSZJT BJFTQUWPOTLSPPRRMGQPRQYZDPSSORDIBYIKKRMQHUP BXCPCTEDPRPYZRNUQYLMKHNVCAGVAOPIGBKDWGJIIKV NQUYAFZEZSTUGYOVRYIISVGVKEVXDKBLTYBHDZNZTRQ VQHJKXGJZYNDBCNTYRPMOHOWVZBJXLDXXVKYOZQUVLU KJVRYGHWMJEYQVGHTNJQJWKOLFRFZ...
output:
6
result:
ok single line: '6'
Test #27:
score: 0
Accepted
time: 20ms
memory: 4320kb
input:
445 58 KGVWGWIMIGQVKDWAQXZCYKSEEXIXXBWHGPAJWXKCMXNTRRLEICEPLZJHQX TMPIZUDRGKATXPLULHFFTIDEHAWNWGHYCOTRIWGJIUDOAZUVBESNEQMGQM GEDWKZHNFVTRPPGGPYUJCISCENNROWSRBTWROXTEDOGGFHRTQCCDIITWCQ XPHWSDWZHEZBCIXQREGTYCAJLGBUQADEQMPHRYURLYTMATMRGYKSYTHMKY YWMMNBDNIIAUOUWEWLMNQYQRCREDBOGXDEXOAEMPCZBQEKCTDYVKWOGFO...
output:
6
result:
ok single line: '6'
Test #28:
score: 0
Accepted
time: 45ms
memory: 5144kb
input:
544 95 ZFVLAMXMQPASGTJZSABPYDSOQDVIXDUWJRJUAQKEBHCNHFZNIOTGZXUQIJHEHLICCEENVBZEJKBQBZFOLRKSJFZELDQEWUJ XZYESFYFLDFSBPAWVOPWEUOPLKZYFOFLWKWHHMVLGSSCPYEHUBOGRWRDXQLQLVGMOAALAIRCBXWUHKMEENNHVHMAZEDEECQ ODJUZXZOGXVSSSKWTCTJNVKZYDRWPBWFFAJVESWDEOQLOYAYFXNCDCMCFCOTHRWANPVSKCGAOFFCZCALAOVBHBOPWYDEJVY DKOKG...
output:
5
result:
ok single line: '5'
Test #29:
score: 0
Accepted
time: 34ms
memory: 5536kb
input:
61 950 ESBJPSCSQAEXMVGEVQUFMVAFHVXTPYQFWNJNLBZBAJXRNWIGQUUBBZHJKVFNRJHRVOLFGXNCXOPUZAXQZDYPHQICOGACPJUBLZJININNZPNNVCIAIZRWGKDZXOYAGLWQNXSRKHMAKJPAHNKIOHYGGOISXGSIFQBIJKWXDUDVLQSKGZUZJSXFYSJTSFEDIOQITYMFIPMCTJLHDFYFLVHGLLNCFNGDNLSINXSUEBAJSRRZEOACSTSOVPQJUCYGKYNRAAQGMNTZXIXLMAANUXXJGSPIPQCDROHLSXRDO...
output:
6
result:
ok single line: '6'
Test #30:
score: 0
Accepted
time: 91ms
memory: 5676kb
input:
283 234 ADHGGMRRPRGHQBLDXQDQBGUSXXFLPDQCDEBUSHAPDXRTSRCUKYTQYIPQMKFNPRTIJWFPSJPKPXDFKIGBBAZGPKLANSVTHLDOJNJNWGCLRTKAAIRYGPCNZZPTYUSYIQZZHEDOMHMANKKPCIPACNCMNRAHMAIBZKVPWEILETCCVMKUNFDTHGBHIKBMFDWTFKMYJWKMBSATOHQKVRHEGNCPQRSEBTEHIVZQEDSVOZMTUT CJWXZVIVIYZGENJMMXBZSGYHMYFDJBZKNJUVJIIDOTRCOFJYLXGHKOAIP...
output:
5
result:
ok single line: '5'
Test #31:
score: 0
Accepted
time: 4ms
memory: 3896kb
input:
46 122 WPQFCTULEZOUZQTUOQBFGBMGCVQCXUCAZHICDJYELAOQCHUWEIZCPBDBSQGGFXYINHOLZZJBOVDZQWHFCSXSIASTLRMJOWICVDLECOZBZGSNKDCSZPGGHJDMTK CEFHGGTJOHWBLZHOMUGGRRIUBVOPPGCFNWOFCRAANAYUSJWGKQMEICCRBOHDNYXXDQGQBFJVSTIYXTRZBTEZUGTDDBPRXRABYPGHYTPNUSCXWWNKKIGMWHQFUI TPEKCTRPXJEDFPDYLAGRFDHZDMOKXLYEBELAMGOHDJJGRQV...
output:
5
result:
ok single line: '5'
Test #32:
score: 0
Accepted
time: 23ms
memory: 4980kb
input:
46 1003 LFUCKMVFUPVHECFGASOYVWPPRYFRDQINNSGXSAJOTEXPQKXTBGYEQWKRGEWRAIBRKIWRVGYYNIAZRWGXAWSIHFNSLPGYELNFATKTOLFUQIDKMZTZUCIYHZIKKNZQUCIIWKZFMMWZMGPQUYBWTRBVUBYJWNMJXKBJIZNYFZCIETXBVUFCRUVKUBSNMTLZSIUPDYNMHRNFLINKOIBBMFEETHXRMSMQJZCFSMGDZCBNIRHUOKNUPQTFRLJBGJEMIPKLNOFMJWUJWUBAAMUZGXZLHPJKKBATXROMKGHY...
output:
6
result:
ok single line: '6'
Test #33:
score: 0
Accepted
time: 0ms
memory: 3560kb
input:
5 5 WALDO ALODW LODWA ODWAL DWALO
output:
5
result:
ok single line: '5'
Test #34:
score: 0
Accepted
time: 22ms
memory: 7464kb
input:
316 316 WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWOXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXOXXXXXXXXXXXXXXXXXXXXXDXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXDXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXLXXXDXXX...
output:
80264
result:
ok single line: '80264'
Test #35:
score: 0
Accepted
time: 1ms
memory: 3656kb
input:
5 5 XXXXX XXWXX XALDX XXOXX XXXXX
output:
9
result:
ok single line: '9'
Test #36:
score: 0
Accepted
time: 1ms
memory: 3560kb
input:
5 5 XXXXX XWXAX XXLXX XDXOX XXXXX
output:
9
result:
ok single line: '9'
Test #37:
score: 0
Accepted
time: 4ms
memory: 3676kb
input:
49 49 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX...
output:
25
result:
ok single line: '25'