QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#661166 | #8776. Not Another Constructive! | comeintocalm# | AC ✓ | 509ms | 249180kb | C++20 | 1006b | 2024-10-20 14:59:11 | 2024-10-20 14:59:11 |
Judging History
answer
#include <bits/stdc++.h>
bool vis[41][41][401][2501];
char s[45];
int n, m;
bool dfs(int i, int x, int y, int z) {
if (z > m) {
return false;
}
if (i >= n) {
if (z == m) {
printf("%s", s + 1);
exit(0);
}
return false;
}
if (vis[i][x][y][z]) {
return false;
}
vis[i][x][y][z] = true;
if (s[i + 1] != '?') {
if (s[i + 1] == 'N') {
dfs(i + 1, x + 1, y, z);
} else if (s[i + 1] == 'A') {
dfs(i + 1, x, y + x, z);
} else if (s[i + 1] == 'C') {
dfs(i + 1, x, y, z + y);
} else {
dfs(i + 1, x, y, z);
}
} else {
s[i + 1] = 'N';
dfs(i + 1, x + 1, y, z);
s[i + 1] = 'A';
dfs(i + 1, x, y + x, z);
s[i + 1] = 'C';
dfs(i + 1, x, y, z + y);
s[i + 1] = 'B';
dfs(i + 1, x, y, z);
s[i + 1] = '?';
}
return false;
}
int main() {
scanf("%d%d", &n, &m);
scanf("%s", s + 1);
bool ans = dfs(0, 0, 0, 0);
if (!ans) {
puts("-1");
} else {
printf("%s", s + 1);
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 4708kb
input:
22 2 N??A??????C???????????
output:
NNCANNNNNNCNNNNNNNNNNN
result:
ok correct
Test #2:
score: 0
Accepted
time: 0ms
memory: 3976kb
input:
18 0 COUNTINGSATELLITES
output:
COUNTINGSATELLITES
result:
ok correct
Test #3:
score: 0
Accepted
time: 0ms
memory: 3856kb
input:
2 1 ??
output:
-1
result:
ok correct
Test #4:
score: 0
Accepted
time: 0ms
memory: 3716kb
input:
1 0 ?
output:
N
result:
ok correct
Test #5:
score: 0
Accepted
time: 0ms
memory: 3860kb
input:
1 0 N
output:
N
result:
ok correct
Test #6:
score: 0
Accepted
time: 0ms
memory: 3864kb
input:
1 0 X
output:
X
result:
ok correct
Test #7:
score: 0
Accepted
time: 0ms
memory: 3736kb
input:
1 1 ?
output:
-1
result:
ok correct
Test #8:
score: 0
Accepted
time: 0ms
memory: 3644kb
input:
1 1 N
output:
-1
result:
ok correct
Test #9:
score: 0
Accepted
time: 0ms
memory: 3776kb
input:
1 1 X
output:
-1
result:
ok correct
Test #10:
score: 0
Accepted
time: 0ms
memory: 3868kb
input:
2 0 ??
output:
NN
result:
ok correct
Test #11:
score: 0
Accepted
time: 0ms
memory: 3876kb
input:
2 0 N?
output:
NN
result:
ok correct
Test #12:
score: 0
Accepted
time: 0ms
memory: 3728kb
input:
2 0 ?C
output:
NC
result:
ok correct
Test #13:
score: 0
Accepted
time: 0ms
memory: 3648kb
input:
2 1 N?
output:
-1
result:
ok correct
Test #14:
score: 0
Accepted
time: 0ms
memory: 3840kb
input:
2 1 ?C
output:
-1
result:
ok correct
Test #15:
score: 0
Accepted
time: 0ms
memory: 3736kb
input:
3 1 ???
output:
NAC
result:
ok correct
Test #16:
score: 0
Accepted
time: 0ms
memory: 3876kb
input:
3 1 N??
output:
NAC
result:
ok correct
Test #17:
score: 0
Accepted
time: 0ms
memory: 3868kb
input:
3 1 ?A?
output:
NAC
result:
ok correct
Test #18:
score: 0
Accepted
time: 0ms
memory: 3920kb
input:
3 1 ??C
output:
NAC
result:
ok correct
Test #19:
score: 0
Accepted
time: 0ms
memory: 3848kb
input:
3 1 NA?
output:
NAC
result:
ok correct
Test #20:
score: 0
Accepted
time: 0ms
memory: 3728kb
input:
3 1 N?C
output:
NAC
result:
ok correct
Test #21:
score: 0
Accepted
time: 0ms
memory: 3852kb
input:
3 1 ?AC
output:
NAC
result:
ok correct
Test #22:
score: 0
Accepted
time: 0ms
memory: 3884kb
input:
4 1 ????
output:
NANC
result:
ok correct
Test #23:
score: 0
Accepted
time: 0ms
memory: 3876kb
input:
4 1 X???
output:
XNAC
result:
ok correct
Test #24:
score: 0
Accepted
time: 0ms
memory: 3876kb
input:
4 1 ???Z
output:
NACZ
result:
ok correct
Test #25:
score: 0
Accepted
time: 0ms
memory: 3736kb
input:
4 1 ?AA?
output:
-1
result:
ok correct
Test #26:
score: 0
Accepted
time: 0ms
memory: 3888kb
input:
4 1 N???
output:
NANC
result:
ok correct
Test #27:
score: 0
Accepted
time: 0ms
memory: 3872kb
input:
4 1 ?N??
output:
ANAC
result:
ok correct
Test #28:
score: 0
Accepted
time: 0ms
memory: 3880kb
input:
4 1 ??N?
output:
NANC
result:
ok correct
Test #29:
score: 0
Accepted
time: 0ms
memory: 3836kb
input:
4 1 ???N
output:
NACN
result:
ok correct
Test #30:
score: 0
Accepted
time: 0ms
memory: 3864kb
input:
4 1 A???
output:
ANAC
result:
ok correct
Test #31:
score: 0
Accepted
time: 0ms
memory: 3912kb
input:
4 1 ?A??
output:
NANC
result:
ok correct
Test #32:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
4 1 ??A?
output:
NCAC
result:
ok correct
Test #33:
score: 0
Accepted
time: 0ms
memory: 3940kb
input:
4 1 ???A
output:
NACA
result:
ok correct
Test #34:
score: 0
Accepted
time: 0ms
memory: 3880kb
input:
4 1 C???
output:
CNAC
result:
ok correct
Test #35:
score: 0
Accepted
time: 0ms
memory: 3788kb
input:
4 1 ?C??
output:
NCAC
result:
ok correct
Test #36:
score: 0
Accepted
time: 0ms
memory: 3880kb
input:
4 1 ??C?
output:
NACN
result:
ok correct
Test #37:
score: 0
Accepted
time: 0ms
memory: 3924kb
input:
4 1 ???C
output:
NANC
result:
ok correct
Test #38:
score: 0
Accepted
time: 0ms
memory: 3892kb
input:
5 4 ?????
output:
NNAAC
result:
ok correct
Test #39:
score: 0
Accepted
time: 0ms
memory: 3904kb
input:
6 14 ??????
output:
-1
result:
ok correct
Test #40:
score: 0
Accepted
time: 0ms
memory: 4132kb
input:
7 14 ???????
output:
-1
result:
ok correct
Test #41:
score: 0
Accepted
time: 1ms
memory: 4184kb
input:
8 43 ????????
output:
-1
result:
ok correct
Test #42:
score: 0
Accepted
time: 0ms
memory: 4336kb
input:
9 55 ?????????
output:
-1
result:
ok correct
Test #43:
score: 0
Accepted
time: 0ms
memory: 4860kb
input:
10 112 ??????????
output:
-1
result:
ok correct
Test #44:
score: 0
Accepted
time: 0ms
memory: 5248kb
input:
11 110 ???????????
output:
-1
result:
ok correct
Test #45:
score: 0
Accepted
time: 1ms
memory: 4512kb
input:
12 4 ????????????
output:
NNNNANNNNNNC
result:
ok correct
Test #46:
score: 0
Accepted
time: 2ms
memory: 6392kb
input:
13 193 ?????????????
output:
-1
result:
ok correct
Test #47:
score: 0
Accepted
time: 1ms
memory: 5616kb
input:
14 91 ??????????????
output:
NNNNANAAACACCC
result:
ok correct
Test #48:
score: 0
Accepted
time: 1ms
memory: 4648kb
input:
15 15 ???????????????
output:
NNNNNNNANANNNNC
result:
ok correct
Test #49:
score: 0
Accepted
time: 0ms
memory: 10100kb
input:
16 261 ????????????????
output:
-1
result:
ok correct
Test #50:
score: 0
Accepted
time: 6ms
memory: 11880kb
input:
17 514 ?????????????????
output:
-1
result:
ok correct
Test #51:
score: 0
Accepted
time: 0ms
memory: 13952kb
input:
18 678 ??????????????????
output:
-1
result:
ok correct
Test #52:
score: 0
Accepted
time: 1ms
memory: 4152kb
input:
19 40 ???????????????????
output:
NNNNNNNNNNNNNANCANC
result:
ok correct
Test #53:
score: 0
Accepted
time: 9ms
memory: 19296kb
input:
20 1019 ????????????????????
output:
-1
result:
ok correct
Test #54:
score: 0
Accepted
time: 3ms
memory: 22624kb
input:
21 1218 ?????????????????????
output:
-1
result:
ok correct
Test #55:
score: 0
Accepted
time: 16ms
memory: 26404kb
input:
22 1348 ??????????????????????
output:
-1
result:
ok correct
Test #56:
score: 0
Accepted
time: 11ms
memory: 30888kb
input:
23 476 ???????????????????????
output:
-1
result:
ok correct
Test #57:
score: 0
Accepted
time: 20ms
memory: 35816kb
input:
24 1445 ????????????????????????
output:
-1
result:
ok correct
Test #58:
score: 0
Accepted
time: 19ms
memory: 41596kb
input:
25 1331 ?????????????????????????
output:
-1
result:
ok correct
Test #59:
score: 0
Accepted
time: 6ms
memory: 12672kb
input:
26 459 ??????????????????????????
output:
NNNNNNNNNNNNANAAACCCCCCCCC
result:
ok correct
Test #60:
score: 0
Accepted
time: 0ms
memory: 7404kb
input:
27 398 ???????????????????????????
output:
NNNNNNNNNNNNNNNNAANAACACCCC
result:
ok correct
Test #61:
score: 0
Accepted
time: 0ms
memory: 5300kb
input:
28 274 ????????????????????????????
output:
NNNNNNNNNNNNNNNNNNNAANAACACC
result:
ok correct
Test #62:
score: 0
Accepted
time: 68ms
memory: 72508kb
input:
29 1624 ?????????????????????????????
output:
-1
result:
ok correct
Test #63:
score: 0
Accepted
time: 81ms
memory: 82348kb
input:
30 2079 ??????????????????????????????
output:
-1
result:
ok correct
Test #64:
score: 0
Accepted
time: 135ms
memory: 93592kb
input:
31 2067 ???????????????????????????????
output:
-1
result:
ok correct
Test #65:
score: 0
Accepted
time: 161ms
memory: 105904kb
input:
32 1267 ????????????????????????????????
output:
-1
result:
ok correct
Test #66:
score: 0
Accepted
time: 0ms
memory: 20876kb
input:
33 928 ?????????????????????????????????
output:
NNNNNNNNNNNNNNNNNANAAAAACCCCACCCC
result:
ok correct
Test #67:
score: 0
Accepted
time: 2ms
memory: 5908kb
input:
34 298 ??????????????????????????????????
output:
NNNNNNNNNNNNNNNNNNNNNNNNANAAAAANCC
result:
ok correct
Test #68:
score: 0
Accepted
time: 279ms
memory: 150144kb
input:
35 2361 ???????????????????????????????????
output:
-1
result:
ok correct
Test #69:
score: 0
Accepted
time: 0ms
memory: 7088kb
input:
36 489 ????????????????????????????????????
output:
NNNNNNNNNNNNNNNNNNNNNNNNNANAACANCCCC
result:
ok correct
Test #70:
score: 0
Accepted
time: 1ms
memory: 4824kb
input:
37 294 ?????????????????????????????????????
output:
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNAANACCAC
result:
ok correct
Test #71:
score: 0
Accepted
time: 28ms
memory: 45144kb
input:
38 1558 ??????????????????????????????????????
output:
NNNNNNNNNNNNNNNNNNNAAAAAAAAAAACCACCCCC
result:
ok correct
Test #72:
score: 0
Accepted
time: 4ms
memory: 31884kb
input:
39 1319 ???????????????????????????????????????
output:
NNNNNNNNNNNNNNNNNNNNNNAAACAANAAACCCCCCC
result:
ok correct
Test #73:
score: 0
Accepted
time: 0ms
memory: 13912kb
input:
40 993 ????????????????????????????????????????
output:
NNNNNNNNNNNNNNNNNNNNNNNNNNANAAAAACCCCCAC
result:
ok correct
Test #74:
score: 0
Accepted
time: 1ms
memory: 3916kb
input:
40 498 ACNANACNNACNACNNNCNCNNNANNNACNCCACAA?ANA
output:
-1
result:
ok correct
Test #75:
score: 0
Accepted
time: 1ms
memory: 3892kb
input:
40 855 NAAANAACNNNCNAANCNANCNANACANCCAANCACNCAC
output:
-1
result:
ok correct
Test #76:
score: 0
Accepted
time: 1ms
memory: 4256kb
input:
40 1007 ?CNACNNAANACANACNACCC?CAANNCCCCANNANCACN
output:
-1
result:
ok correct
Test #77:
score: 0
Accepted
time: 1ms
memory: 4300kb
input:
40 1778 NACANANN?CCANNCCAACNNCCNCCCNCCNACCNC?NNN
output:
-1
result:
ok correct
Test #78:
score: 0
Accepted
time: 2ms
memory: 5896kb
input:
40 2186 ACCCACAN?NNA?AACCNNNN?ANACCANCNCNNCA?NCN
output:
-1
result:
ok correct
Test #79:
score: 0
Accepted
time: 0ms
memory: 7512kb
input:
40 332 ACAC?NCCCANAA?ACCNNC?NAC?CAC?CNCNNACNNNN
output:
-1
result:
ok correct
Test #80:
score: 0
Accepted
time: 1ms
memory: 5056kb
input:
40 712 ANCNANAAC?CACAACA?CNACCCANAACCA?CNNAANCN
output:
-1
result:
ok correct
Test #81:
score: 0
Accepted
time: 0ms
memory: 4312kb
input:
40 1127 C?CAAAANNCANANAC?NCANACANAACAACANNCCNCAC
output:
-1
result:
ok correct
Test #82:
score: 0
Accepted
time: 1ms
memory: 4264kb
input:
40 1835 CANNCAANNNAANANNCACANAC?CCCCAACA?NNNCAC?
output:
-1
result:
ok correct
Test #83:
score: 0
Accepted
time: 1ms
memory: 4168kb
input:
40 2009 CANAAAN?ANAACNCCNCCNCAAANCANCCAN?CCNCAAN
output:
-1
result:
ok correct
Test #84:
score: 0
Accepted
time: 1ms
memory: 4972kb
input:
40 54 CNAC?ACAAC?ACC?ANC?C?NNCAANCCAC?NCN?CACA
output:
-1
result:
ok correct
Test #85:
score: 0
Accepted
time: 18ms
memory: 30532kb
input:
40 955 ?A?ANA?NN?C?ANC??CNNACAAC?N?AAN?AN??ANNA
output:
-1
result:
ok correct
Test #86:
score: 0
Accepted
time: 12ms
memory: 39904kb
input:
40 1451 ??CCCA?N?ACCN?C???NNN??C?ANAN??NCNA??NAN
output:
-1
result:
ok correct
Test #87:
score: 0
Accepted
time: 3ms
memory: 12404kb
input:
40 1526 CN??AC?CCCCNACCNCNCCNC?CAAN?C?CA??ANCN?A
output:
-1
result:
ok correct
Test #88:
score: 0
Accepted
time: 3ms
memory: 8352kb
input:
40 2453 C?NC?CCAAN?ACCCNCC??ACAANCANCNCNNAACC?NN
output:
-1
result:
ok correct
Test #89:
score: 0
Accepted
time: 8ms
memory: 20172kb
input:
40 166 ?NC??AACAN??NCA?CCAA?A??CNNN?ACNN?AN?ANC
output:
NNCAAAACANBBNCABCCAANABBCNNNBACNNNANBANC
result:
ok correct
Test #90:
score: 0
Accepted
time: 4ms
memory: 9864kb
input:
40 887 ?NA?AN?N?A?ANN??N?ANCAN?N????AC?NN?NA???
output:
NNANANNNNANANNNNNNANCANANANCAACCNNCNACCC
result:
ok correct
Test #91:
score: 0
Accepted
time: 3ms
memory: 31024kb
input:
40 1310 CCN?NNANC??CANN??NC?N??NA?NNNNCN?N?CCCCC
output:
-1
result:
ok correct
Test #92:
score: 0
Accepted
time: 8ms
memory: 24656kb
input:
40 1568 ANCN?N?NACC??NNN?AAC?AANA?CA?NC?CNNAN??N
output:
-1
result:
ok correct
Test #93:
score: 0
Accepted
time: 0ms
memory: 29092kb
input:
40 2035 CA?N?ACCNN??CANA?NC?NACNC??CC???NCA?N?AC
output:
-1
result:
ok correct
Test #94:
score: 0
Accepted
time: 1ms
memory: 4184kb
input:
40 126 AC?CACCCN???C?NCCN?NN??CN?CNCN?C?N?C?A?C
output:
ACNCACCCNNNNCNNCCNNNNNNCNNCNCNNCANNCCACC
result:
ok correct
Test #95:
score: 0
Accepted
time: 7ms
memory: 23344kb
input:
40 962 CCC???A??????AN?N???C?NN??CANA?CNA??N???
output:
CCCNNNANNNNNNANANAAACCNNCACANAACNACCNCCC
result:
ok correct
Test #96:
score: 0
Accepted
time: 16ms
memory: 31644kb
input:
40 1043 ?A??NANA?CN?N?AN?ANN?CNAANCC??AAANNN????
output:
-1
result:
ok correct
Test #97:
score: 0
Accepted
time: 73ms
memory: 69868kb
input:
40 1638 N?ANA?NA???A??N?CNNAA???NC????CNN??AC??N
output:
-1
result:
ok correct
Test #98:
score: 0
Accepted
time: 44ms
memory: 52400kb
input:
40 2240 NNC??NCA???N?N?NNC??CNNNAN??C?AN??AC?C??
output:
-1
result:
ok correct
Test #99:
score: 0
Accepted
time: 5ms
memory: 17900kb
input:
40 55 N?NCNC????C?A??A?A?NN??ACC??C??NC???ACN?
output:
-1
result:
ok correct
Test #100:
score: 0
Accepted
time: 0ms
memory: 6904kb
input:
40 639 C???NN??C?N?N????N?CA?NCAN????AN????NA??
output:
CNNNNNNNCNNNNNNNNNNCANNCANNANAANCCACNACC
result:
ok correct
Test #101:
score: 0
Accepted
time: 30ms
memory: 50492kb
input:
40 1438 ?C?A?NA?AN???CA???NAAAN??A?NNANNCAA?????
output:
-1
result:
ok correct
Test #102:
score: 0
Accepted
time: 63ms
memory: 82708kb
input:
40 1660 ???C?A???????NN??AANNAC???A?CN??ACN?AC?C
output:
-1
result:
ok correct
Test #103:
score: 0
Accepted
time: 169ms
memory: 114396kb
input:
40 2016 ??AA??N?N??A?C?C????????C????C?C?CN??N?A
output:
-1
result:
ok correct
Test #104:
score: 0
Accepted
time: 0ms
memory: 4104kb
input:
40 242 ?C???A???AA??A??C?CN???C???A?ANA?NN??AA?
output:
NCNNNANNNAANNANNCNCNNNNCNNNANANANNNANAAC
result:
ok correct
Test #105:
score: 0
Accepted
time: 0ms
memory: 6556kb
input:
40 711 ??A?AA?C??C???CCNA?????C????A?????A??C??
output:
NNANAANCNNCNNNCCNANNNNNCNNNNAAAAAAACACCC
result:
ok correct
Test #106:
score: 0
Accepted
time: 5ms
memory: 10000kb
input:
40 1094 ??AACN??N?A?????C????AA??CC???CC?N?A????
output:
NNAACNNNNNANNNNNCNNNNAAAACCAAACCCNCACCAC
result:
ok correct
Test #107:
score: 0
Accepted
time: 38ms
memory: 66884kb
input:
40 1878 ?A??AACCA????N???A???C?C?C??C?NANC?N?NAC
output:
-1
result:
ok correct
Test #108:
score: 0
Accepted
time: 59ms
memory: 60280kb
input:
40 2082 AC??ACANC?CN?C?N???C?N???N??C?CC?????C?C
output:
-1
result:
ok correct
Test #109:
score: 0
Accepted
time: 1ms
memory: 4132kb
input:
40 268 N?N??NNNCNC??CAC????A?C?????N???AN??NC??
output:
NNNNNNNNCNCNNCACNNNNANCNNNNNNNNNANANNCCC
result:
ok correct
Test #110:
score: 0
Accepted
time: 4ms
memory: 13780kb
input:
40 960 ?????????N???NA?????????C??AC???AN?A???A
output:
NNNNNNNNNNNNNNANNNNNNNAACNAACCCCANAACCCA
result:
ok correct
Test #111:
score: 0
Accepted
time: 65ms
memory: 56168kb
input:
40 1342 ???C?????C?????NA?N??N?C?????A?N???NA???
output:
NNNCNNNNNCNNNAANAANAANACACACAACNCCCNACCC
result:
ok correct
Test #112:
score: 0
Accepted
time: 111ms
memory: 100504kb
input:
40 1739 ?A?A???A???N?A??N???C???NCC??C??ANN???A?
output:
-1
result:
ok correct
Test #113:
score: 0
Accepted
time: 456ms
memory: 199768kb
input:
40 2484 ??????N????N?????N?C??N????????????A???N
output:
-1
result:
ok correct
Test #114:
score: 0
Accepted
time: 0ms
memory: 4616kb
input:
40 116 ?CN????????A??A???C????????????????C????
output:
NCNNNNNNNNNANNANNNCNNNNNNNNNNNNNCCACNNNN
result:
ok correct
Test #115:
score: 0
Accepted
time: 2ms
memory: 6792kb
input:
40 538 NC???N?????????????NN??N????????CC???N??
output:
NCNNNNNNNNNNNNNNNNNNNNNNNNNANAAACCANANCC
result:
ok correct
Test #116:
score: 0
Accepted
time: 5ms
memory: 15324kb
input:
40 1128 ?????AN?????CN????N?A????C???C??????????
output:
NNNNNANNNNNNCNNNNNNNANNNACAAACNAACCCACCC
result:
ok correct
Test #117:
score: 0
Accepted
time: 345ms
memory: 147032kb
input:
40 1819 ?????????C?AC?????C??A??NC?????????????C
output:
-1
result:
ok correct
Test #118:
score: 0
Accepted
time: 380ms
memory: 169028kb
input:
40 2198 ??????A???N????????ANN???N?C??????C?????
output:
-1
result:
ok correct
Test #119:
score: 0
Accepted
time: 1ms
memory: 4376kb
input:
40 373 ???????????C?A?????????A???A?C??????????
output:
NNNNNNNNNNNCNANNNNNNNNNANNNANCNNNNACANCC
result:
ok correct
Test #120:
score: 0
Accepted
time: 0ms
memory: 8576kb
input:
40 744 ?????????????????C????????????A????C???N
output:
NNNNNNNNNNNNNNNNNCNNNNNNNNNAANAACCACCCCN
result:
ok correct
Test #121:
score: 0
Accepted
time: 0ms
memory: 19332kb
input:
40 1103 ???????????????????????????N????????????
output:
NNNNNNNNNNNNNNNNNNNNNNNNANANAAAAAACCACCC
result:
ok correct
Test #122:
score: 0
Accepted
time: 47ms
memory: 41448kb
input:
40 1866 ???????A??????A??A???????????????C??????
output:
NNNNNNNANNNNNNANNANNANAAAAACCCACCCCCCCCC
result:
ok correct
Test #123:
score: 0
Accepted
time: 509ms
memory: 203192kb
input:
40 2466 ????????????CN?????????????????N??CA????
output:
-1
result:
ok correct
Test #124:
score: 0
Accepted
time: 31ms
memory: 249180kb
input:
40 1 ?????????????????????????????????????NAC
output:
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAANAC
result:
ok correct