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QOJ

ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#957667	#9667. L-Covering Checker	pb^#	AC ✓	36ms	8836kb	C++14	1.2kb	2025-03-30 15:13:03	2025-03-30 15:13:03

Judging History

This is the latest submission verdict.

[2025-03-30 15:13:03]
Judged

Verdict: AC
Time: 36ms
Memory: 8836kb

Show

[2025-03-30 15:13:03]
Submitted

answer

#include<bits/stdc++.h>
using namespace std;
char p[510][510];
int cnt[505][505][5],n,m;
void solve(){
	cin>>n>>m;
		int tot=0,cnt_P=0;
		for(int i=1;i<=n;i++)
			for(int j=1;j<=m;j++)
			cnt[i][j][1]=cnt[i][j][2]=cnt[i][j][3]=cnt[i][j][4]=0;
		for(int i=1;i<=n;i++){
			for(int j=1;j<=m;j++){
				cin>>p[i][j];
				if(p[i][j]=='.')cnt_P++;
				else if(p[i][j]=='C')continue;
				else
				{
				tot++;
				if(p[i][j]=='U'){++cnt[i-1][j][1];}
				if(p[i][j]=='R'){++cnt[i][j+1][2];}
				if(p[i][j]=='D'){++cnt[i+1][j][3];}
				if(p[i][j]=='L'){++cnt[i][j-1][4];}
				}
			}
		}
		if((cnt_P==1&&p[1][m]!='.')||cnt_P!=1){cout<<"No\n";return;}
		for(int i=1;i<=n;i++){
			for(int j=1;j<=m;j++){
				if(p[i][j]=='C'){
					tot=tot-cnt[i][j][1]-cnt[i][j][2]-cnt[i][j][3]-cnt[i][j][4];
					if(cnt[i][j][1]+cnt[i][j][2]+cnt[i][j][3]+cnt[i][j][4]!=2)
					{cout<<"No\n";return;}	
					else
					if(!((cnt[i][j][1]&&cnt[i][j][2])||(cnt[i][j][1]&&cnt[i][j][4])||(cnt[i][j][3]&&cnt[i][j][2])||(cnt[i][j][3]&&cnt[i][j][4])))	
					{cout<<"No\n";return;}	
				}
			}
		}
		cout<<(tot==0?"Yes\n":"No\n");
		return ;
}
int main(){
	int T=1;cin>>T;
	while(T--){
		solve();
	}
	return 0;
/*
2
2 3
DD.
UCL
4 4
RCL.
DDDD
CCCC
UUUU
*/
}

Source code, Language: C++14

这程序好像有点Bug，我给组数据试试？

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100

Accepted

time: 0ms

memory: 3584kb

input:

2
4 4
CLD.
UDCL
DCLD
CLRC
2 3
DRC
CLU

output:

Yes
No

result:

ok 2 lines

Test #2:

score: 0

Accepted

time: 12ms

memory: 5944kb

input:

100
47 81
UCRRRCR.CLURRCU.LLURDDRUDCC.DCUD.R.CURL.RURLC.LULLRDCDDDCC.CCUCLRLDLULULLUD.RL.R.
LC.UDUDCL.RRCLRRURDRDL.CRD.LDURRCRU.D..LCUD.UDRCCURDLDCD.DDUC..ULLLDDCLDCL..C.R.C
LLLLLULD.RLU.L.RURDLRCULCD.RCC..URD.LD.UCURDR.DUULUUD..LULR.RDURDDLRRRD.LCLLCD.D.
LUCR.RCR.RRCL..DRURU.CLLDRCUULULRULCU.RD.UDR...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
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No
No
No
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No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No

result:

ok 100 lines

Test #3:

score: 0

Accepted

time: 1ms

memory: 5888kb

input:

100
10 10
D.D....D..
CLCLCLRCRC
CL..U.CL.U
UCL.RCU.D.
.UDRCUCLCL
..CLU.U.RC
.CL.CL.DDU
.UCLUDRCCL
D.U.RCDCLD
CL...RCURC
11 5
.CLCL
.U.U.
..RC.
DRCU.
CLU.D
.CLRC
DUDRC
CLCLU
D....
CLD.D
.RCRC
2 8
D.RCCLD.
CL.UURC.
7 10
.CL...CLCL
.U.D.DU.U.
.RCCLCL.RC
..UD.RCRCU
D.RCD.U.U.
CL.RCD.RC.
.....CL.U.
7 10
...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
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No
No
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No
No
No
No
No
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No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No

result:

ok 100 lines

Test #4:

score: 0

Accepted

time: 1ms

memory: 3712kb

input:

100
5 32
.DCL.DCLRC.RCDRC...CLD.CLCL.....
RCUDRCUCLU..UCLU.RCURC.U.UCL..CL
CL.CL..U.RC...D.RCU.D.D...U.CLU.
U.D.D.CL.DUD.RCCLUDRCDCL.DD.UD.D
.RC.CLU..CLCL..U..CL.CL.RCCLRCRC
8 41
.RCDRCRCRCD..CL.RCD.CL..CLCL.RCRC.RCCL.RC
RCUCLUDUDUCL.URC.UCLUDRCU.U...UDUD.UUCL.U
DUCL..CLCLD...DUCL..RC.UCL.RCD.CLCLD....

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
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No
No
No
No
No
No
No
No
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No
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No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No

result:

ok 100 lines

Test #5:

score: 0

Accepted

time: 10ms

memory: 4224kb

input:

100
92 77
.RC.RCCL.D.CLCLD......D.RC.RCRCCLD.CL.RCCLCL..D.D.RCCL.DCL.D.CLRCD.D.D.CLRCD.
..U..UUCLCLU.UDCL.CL.RCRCUD.U.UU.CLU.RCUUDURCRC.CLDUUDRCU..CLUCLUCLCLCLURCUCL
D.D.D.DUCLCL..CLD.U.CLCLURCCLD....CLCLU.DCL.UCL.DRCDRCDRC..CLDUCL.D..CL.DUD..
CLCLCLCLUDUDRC..CLCLU.U.D..URCCLDDU.U..RC.RC.U.RCRCCLRCD...

output:

No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
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No
No
No
No
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No
No
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No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No

result:

ok 100 lines

Test #6:

score: 0

Accepted

time: 36ms

memory: 8300kb

input:

1059
2 2
RC
.U
5 2
D.
CL
CL
UD
RC
2 8
DRCDRCD.
CLUCLUCL
4 4
CLRC
URCU
RCUD
.URC
11 2
D.
CL
RC
DU
CL
RC
DU
CL
RC
DU
CL
5 5
CLRC.
URCUD
CLURC
UDDRC
RCCLU
14 2
RC
DU
CL
RC
DU
CL
RC
DU
CL
RC
DU
CL
RC
.U
4 7
CLDCLD.
URCUDCL
DRCDCLD
CLUCLRC
17 2
D.
CL
RC
DU
CL
RC
DU
CL
RC
DU
CL
RC
DU
CL
RC
DU
CL
20 2
D.
C...

output:

No
Yes
Yes
No
Yes
Yes
No
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
No
Yes
No
No
Yes
Yes
Yes
Yes
No
Yes
No
Yes
Yes
Yes
No
No
Yes
No
No
No
Yes
No
No
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
No
No
No
Yes
Yes
...

result:

ok 1059 lines

Test #7:

score: 0

Accepted

time: 35ms

memory: 4608kb

input:

81
100 100
CLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLD.
URCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCURCUDCL
CLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLD...

output:

Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
Yes
Yes
No
Yes
Yes
No
Yes
No
No
No
No
Yes
No
No
Yes
No
Yes
Yes
No
No
Yes
No
No
Yes
No
Yes
Yes
Yes
Yes
No
No
Yes
No
Yes
Yes
No
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No
Yes
No
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
No
Yes
No
Yes
No
No
No
No
No
Yes
Yes
Yes
No
No
No
Yes
Yes

result:

ok 81 lines

Test #8:

score: 0

Accepted

time: 30ms

memory: 6892kb

input:

15
250 250
CLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLD.
URCURCURCURCURCURCURCURCURCURCURCURCUR...

output:

Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
No
Yes
Yes
Yes

result:

ok 15 lines

Test #9:

score: 0

Accepted

time: 33ms

memory: 6864kb

input:

10
301 301
CLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCCLCLRCC...

output:

No
Yes
Yes
No
No
Yes
No
No
Yes
Yes

result:

ok 10 lines

Test #10:

score: 0

Accepted

time: 34ms

memory: 8836kb

input:

4
497 497
CLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCLDCL...

output:

No
Yes
No
Yes

result:

ok 4 lines

Extra Test:

score: 0

Extra Test Passed