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
#327791#833. Cells Blockingxztmax67AC ✓501ms251228kbC++141.2kb2024-02-15 14:22:242024-02-15 14:22:25

Judging History

你现在查看的是最新测评结果

  • [2024-02-15 14:22:25]
  • 评测
  • 测评结果:AC
  • 用时:501ms
  • 内存:251228kb
  • [2024-02-15 14:22:24]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N=3e3+100;
int n,m,cnt,ans;
char c[N][N];
int dp[N][N],dp2[N][N];
vector<int>vt[N<<1];
signed main()
{
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>n>>m;
	for(int i=1;i<=n;i++)for(int j=1;j<=m;j++)cin>>c[i][j],cnt+=c[i][j]=='.';
	for(int i=1;i<=n;i++)for(int j=1;j<=m;j++)
		dp[i][j]|=dp[i-1][j]|dp[i][j-1]|(i==1&&j==1),
		dp[i][j]&=c[i][j]=='.';
	for(int i=n; i>=1 ;i--)for(int j=m; j>=1 ;j--)
		dp2[i][j]|=dp2[i+1][j]|dp2[i][j+1]|(i==n&&j==m),
		dp2[i][j]&=c[i][j]=='.';
	for(int i=1;i<=n;i++)
		for(int j=1;j<=m;j++)
			if(!dp[i][j]||!dp2[i][j]) c[i][j]='*';
			else vt[i+j].push_back(i);
	if(!dp[n][m])return cout<<cnt*(cnt-1)/2<<endl,0;
	int tmp=0;for(int i=2;i<=n+m;i++)if(vt[i].size()==1)ans+=(cnt-(++tmp));
	for(int i=2; i<=n+m ;i++)
	{
		if(vt[i].size()==1) continue;
		int l=vt[i][1],r=vt[i].back();
		if(l==r)ans++;
		for(int j=i+1;j<=n+m;j++)
		{
			if(c[l][j-l]!='.')l++;
			if(c[r+1][j-r-1]=='.')r++;
			if(l==r&&vt[j].size()!=1) ans++;  
		}
		l=vt[i][0],r=vt[i][vt[i].size()-2];
		for(int j=i+1;j<=n+m;j++)
		{
			if(c[l][j-l]!='.')l++;
			if(c[r+1][j-r-1]=='.')r++;
			if(l==r&&vt[j].size()!=1)ans++;  
		}
	}
	cout<<ans<<endl;
}

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 3736kb

input:

3 3
...
...
...

output:

17

result:

ok 1 number(s): "17"

Test #2:

score: 0
Accepted
time: 1ms
memory: 3724kb

input:

3 3
.**
.*.
...

output:

15

result:

ok 1 number(s): "15"

Test #3:

score: 0
Accepted
time: 1ms
memory: 3736kb

input:

3 4
****
....
****

output:

6

result:

ok 1 number(s): "6"

Test #4:

score: 0
Accepted
time: 1ms
memory: 3828kb

input:

5 5
*....
.*.*.
*****
*.***
..*..

output:

66

result:

ok 1 number(s): "66"

Test #5:

score: 0
Accepted
time: 1ms
memory: 3892kb

input:

10 10
...***.*..
**...*.***
...***.*..
.**...*.*.
.*****..*.
..*.****.*
.**...****
..*..*.*.*
*.*.**....
....**...*

output:

1378

result:

ok 1 number(s): "1378"

Test #6:

score: 0
Accepted
time: 418ms
memory: 250220kb

input:

3000 3000
.....................................................................................................................................................................................................................................................................................................

output:

17999999

result:

ok 1 number(s): "17999999"

Test #7:

score: 0
Accepted
time: 403ms
memory: 250416kb

input:

3000 3000
...................................................................................................................*......................................................................................................................................................................*..........

output:

17981671

result:

ok 1 number(s): "17981671"

Test #8:

score: 0
Accepted
time: 424ms
memory: 250200kb

input:

3000 3000
.....................................................................................................................................................................................................................................................................................................

output:

17963615

result:

ok 1 number(s): "17963615"

Test #9:

score: 0
Accepted
time: 435ms
memory: 250056kb

input:

3000 3000
.........................................................................................................*...........................................................................................................................................................................................

output:

17945165

result:

ok 1 number(s): "17945165"

Test #10:

score: 0
Accepted
time: 431ms
memory: 249876kb

input:

3000 3000
......................................................................................................................................*........................................................................................................................................*.....................

output:

17928211

result:

ok 1 number(s): "17928211"

Test #11:

score: 0
Accepted
time: 405ms
memory: 249488kb

input:

3000 3000
...........................................*.........................................................................................................................................................................................................................................................

output:

17911522

result:

ok 1 number(s): "17911522"

Test #12:

score: 0
Accepted
time: 433ms
memory: 249204kb

input:

3000 3000
..............................*................................................................................................................*.....................................................................................................................................................

output:

17892283

result:

ok 1 number(s): "17892283"

Test #13:

score: 0
Accepted
time: 459ms
memory: 249164kb

input:

3000 3000
................................................................*....*................................................................................................................................................................................*..............................................

output:

17873837

result:

ok 1 number(s): "17873837"

Test #14:

score: 0
Accepted
time: 421ms
memory: 248592kb

input:

3000 3000
............................................................................................*.............................................................................*.....................................................................................................*....................

output:

17856701

result:

ok 1 number(s): "17856701"

Test #15:

score: 0
Accepted
time: 457ms
memory: 248536kb

input:

3000 3000
......................................*..........................................................................................................................................................*...................................................................................................

output:

17837857

result:

ok 1 number(s): "17837857"

Test #16:

score: 0
Accepted
time: 420ms
memory: 247728kb

input:

3000 3000
.................................................................................................................................................................................................................................*...................................................................

output:

17819731

result:

ok 1 number(s): "17819731"

Test #17:

score: 0
Accepted
time: 425ms
memory: 219500kb

input:

3000 3000
......**.....*.......*.*..........*..*...............**.............*.......*......*........*...*.....*.*.................*......*....*.........*....................*.................*.......................*.......*..*.*.......*.......................*..........*..*......................*...

output:

16202000

result:

ok 1 number(s): "16202000"

Test #18:

score: 0
Accepted
time: 361ms
memory: 189312kb

input:

3000 3000
..................*....*....*...*.*.............*.............*....*.*..*...*...*...*....*.................*...*.*.***...*....*......*.......**...*.......*.*...**...*...*...**.........*..........*.....*.*....*..*.......*.........*..*.....*...............**.......*.....*.*..*.*.*........*.....

output:

21600132

result:

ok 1 number(s): "21600132"

Test #19:

score: 0
Accepted
time: 122ms
memory: 158124kb

input:

3000 3000
..*.**...*...............*........*.*..*.*.....*........*.*..........***..*..*..*..*.*....*...*.*.....***.*...*........*..*.****..*.*....**.......*......*....*..*......*......*..*..*.*..*....*..**.*.......**.*...*....**.....**..*......*...*....*..*.**.*..***...*.....*....***.*........*.......

output:

19862779430431

result:

ok 1 number(s): "19862779430431"

Test #20:

score: 0
Accepted
time: 103ms
memory: 158184kb

input:

3000 3000
.**.**..***....*.*....*..*...*.**.**.**.......*...*........*.**.*...*...**..*...*.*.**.*.*.*.*..*...*.....*.*.**.*.*....*.**.....*..**.**.*....**.**.**..*..**...*...***.**.*.*......**.**.*...****.....***.*..*.**.*......*..**.**.**.....**...*.*..***.******...**....****..***..**.*........*.....

output:

14601805246666

result:

ok 1 number(s): "14601805246666"

Test #21:

score: 0
Accepted
time: 1ms
memory: 3772kb

input:

1 1
*

output:

0

result:

ok 1 number(s): "0"

Test #22:

score: 0
Accepted
time: 0ms
memory: 3748kb

input:

1 1
.

output:

0

result:

ok 1 number(s): "0"

Test #23:

score: 0
Accepted
time: 1ms
memory: 3808kb

input:

2 2
..
..

output:

6

result:

ok 1 number(s): "6"

Test #24:

score: 0
Accepted
time: 95ms
memory: 158188kb

input:

3000 3000
.***..**..*.*.*..*...**.*.**...***.....*..***.***.***.*..***.*......*.**.***.***.*...**.*.*..***.*..*.**..***.....*.*...***.*.***.*...*.*.....***.*..**...*.*..*.******.*.*...**.*..**.**.**.*.**..***.**.***..*......**.***.**.*....*..*.....*...*..*.*..*..*.*...**.**...*..**..***.**..*....*.....

output:

10151159625145

result:

ok 1 number(s): "10151159625145"

Test #25:

score: 0
Accepted
time: 92ms
memory: 158132kb

input:

3000 3000
*******************************************************************************************************************************************************************************************************************************************************.******************************************...

output:

39716328

result:

ok 1 number(s): "39716328"

Test #26:

score: 0
Accepted
time: 501ms
memory: 250700kb

input:

3000 3000
..*..................................................................................................................................................................................................................................................................................................

output:

35988321

result:

ok 1 number(s): "35988321"

Test #27:

score: 0
Accepted
time: 426ms
memory: 250828kb

input:

3000 3000
.....................................................................................................................................................................................................................................................................................................

output:

35981866

result:

ok 1 number(s): "35981866"

Test #28:

score: 0
Accepted
time: 458ms
memory: 251176kb

input:

3000 3000
...**................................................................................................................................................................................................................................................................................................

output:

17988153

result:

ok 1 number(s): "17988153"

Test #29:

score: 0
Accepted
time: 458ms
memory: 251228kb

input:

3000 3000
...*.*...............................................................................................................................................................................................................................................................................................

output:

35969654

result:

ok 1 number(s): "35969654"

Test #30:

score: 0
Accepted
time: 438ms
memory: 251092kb

input:

3000 3000
..*..................................................................................................................................................................................................................................................................................................

output:

17982216

result:

ok 1 number(s): "17982216"

Test #31:

score: 0
Accepted
time: 430ms
memory: 250004kb

input:

3000 3000
....**.*.............................................................................................................................................................................................................................................................................................

output:

71916090

result:

ok 1 number(s): "71916090"

Test #32:

score: 0
Accepted
time: 467ms
memory: 250136kb

input:

3000 3000
....****.............................................................................................................................................................................................................................................................................................

output:

71903186

result:

ok 1 number(s): "71903186"

Test #33:

score: 0
Accepted
time: 425ms
memory: 250656kb

input:

3000 3000
.........*...........................................................................................................................................................................................................................................................................................

output:

17973051

result:

ok 1 number(s): "17973051"

Test #34:

score: 0
Accepted
time: 448ms
memory: 248932kb

input:

3000 3000
.*.......*.............................................................................................................*................................................................................*............................................................................................

output:

35630636

result:

ok 1 number(s): "35630636"

Test #35:

score: 0
Accepted
time: 452ms
memory: 248760kb

input:

3000 3000
.**...........................*..........................................................................................................................................*...........................................................................................................................

output:

44529907

result:

ok 1 number(s): "44529907"

Test #36:

score: 0
Accepted
time: 424ms
memory: 248856kb

input:

3000 3000
....*................................................................................................................................................................................................................................................................................................

output:

53426863

result:

ok 1 number(s): "53426863"

Test #37:

score: 0
Accepted
time: 434ms
memory: 248916kb

input:

3000 3000
..*.*........................................................................*............................*...............*.............................................................................................................................................*........*...................

output:

53419301

result:

ok 1 number(s): "53419301"

Test #38:

score: 0
Accepted
time: 431ms
memory: 248212kb

input:

3000 3000
......*.........*...................................................................................*.....................................................................................................................*................................................*.........................

output:

26705269

result:

ok 1 number(s): "26705269"

Test #39:

score: 0
Accepted
time: 444ms
memory: 248880kb

input:

3000 3000
....*.**....*................*............................*..........*...............................................................................................................................................................................................................................

output:

17799069

result:

ok 1 number(s): "17799069"

Test #40:

score: 0
Accepted
time: 458ms
memory: 248504kb

input:

3000 3000
...***.......................................*...........*.....................*........*...........................................................................................................................................................*................................................

output:

53393629

result:

ok 1 number(s): "53393629"

Test #41:

score: 0
Accepted
time: 424ms
memory: 251000kb

input:

3000 3000
.....................................................................................................................................................................................................................................................................................................

output:

98852811

result:

ok 1 number(s): "98852811"

Test #42:

score: 0
Accepted
time: 1ms
memory: 3980kb

input:

1 3000
........................................................................................................................................................................................................................................................................................................

output:

4498500

result:

ok 1 number(s): "4498500"

Test #43:

score: 0
Accepted
time: 458ms
memory: 248660kb

input:

3000 3000
.*.....*...........................................................................................................*...................................*........................................................................................*............*.......................................

output:

88979547

result:

ok 1 number(s): "88979547"

Test #44:

score: 0
Accepted
time: 455ms
memory: 250696kb

input:

3000 3000
.....................................................................................................................................................................................................................................................................................................

output:

35964327

result:

ok 1 number(s): "35964327"