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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
#328538#833. Cells BlockingOFforest_1273AC ✓403ms247120kbC++141.6kb2024-02-15 20:47:522024-02-15 20:47:53

Judging History

你现在查看的是最新测评结果

  • [2024-02-15 20:47:53]
  • 评测
  • 测评结果:AC
  • 用时:403ms
  • 内存:247120kb
  • [2024-02-15 20:47:52]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
using namespace std;
int read(){int s=0,f=1;char c=getchar();while(c<'0'||c>'9'){if(c=='-')f*=-1;c=getchar();}while(c>='0'&&c<='9')s=(s<<1)+(s<<3)+(c^48),c=getchar();return s*f;}
const int N=3e3+10;
int n,m,f[N][N],f2[N][N],cnt,ans;
vector<int> vec[N<<1];
char a[N][N];
signed main(){
    n=read(),m=read();
    for(int i=1;i<=n;++i){
        for(int j=1;j<=m;++j)a[i][j]=getchar(),f[i][j]|=f[i-1][j]|f[i][j-1],f[i][j]|=(i==1&&j==1),f[i][j]&=(a[i][j]=='.'),cnt+=(a[i][j]=='.');
        getchar();
    }
    for(int i=n;i;--i)
        for(int j=m;j;--j)
            f2[i][j]|=f2[i+1][j]|f2[i][j+1],f2[i][j]|=(i==n&&j==m),f2[i][j]&=(a[i][j]=='.');
	for(int i=1;i<=n;++i)
        for(int j=1;j<=m;++j)
            if(!f[i][j]||!f2[i][j])a[i][j]='*';
            else vec[i+j].push_back(i);/*按对角线(右到左)分组*/
    if(!f[n][m]){printf("%lld\n",cnt*(cnt-1)/2);return 0;}
    int num=0;
    for(int i=2;i<=n+m;++i)if(vec[i].size()==1)ans+=(cnt-(++num));
    for(int i=2;i<=n+m;++i){
        if(vec[i].size()==1)continue;
        int l=vec[i][1],r=vec[i].back();
        if(l==r)++ans;
        for(int j=i+1;j<=n+m;++j){
            if(a[l][j-l]!='.')++l;
            if(a[r+1][j-r-1]=='.')++r;
            if(l==r&&vec[j].size()!=1)++ans;
        }
    }
    for(int i=2;i<=n+m;++i){
        if(vec[i].size()==1)continue;
        int l=vec[i][0],r=vec[i][vec[i].size()-2];
        for(int j=i+1;j<=n+m;++j){
            if(a[l][j-l]!='.')++l;
            if(a[r+1][j-r-1]=='.')++r;
            if(l==r&&vec[j].size()!=1)++ans;
        }
    }
    printf("%lld\n",ans);
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 4004kb

input:

3 3
...
...
...

output:

17

result:

ok 1 number(s): "17"

Test #2:

score: 0
Accepted
time: 1ms
memory: 3972kb

input:

3 3
.**
.*.
...

output:

15

result:

ok 1 number(s): "15"

Test #3:

score: 0
Accepted
time: 1ms
memory: 3936kb

input:

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

output:

6

result:

ok 1 number(s): "6"

Test #4:

score: 0
Accepted
time: 0ms
memory: 3928kb

input:

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

output:

66

result:

ok 1 number(s): "66"

Test #5:

score: 0
Accepted
time: 0ms
memory: 4072kb

input:

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

output:

1378

result:

ok 1 number(s): "1378"

Test #6:

score: 0
Accepted
time: 360ms
memory: 245928kb

input:

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

output:

17999999

result:

ok 1 number(s): "17999999"

Test #7:

score: 0
Accepted
time: 359ms
memory: 246104kb

input:

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

output:

17981671

result:

ok 1 number(s): "17981671"

Test #8:

score: 0
Accepted
time: 381ms
memory: 245976kb

input:

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

output:

17963615

result:

ok 1 number(s): "17963615"

Test #9:

score: 0
Accepted
time: 389ms
memory: 245632kb

input:

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

output:

17945165

result:

ok 1 number(s): "17945165"

Test #10:

score: 0
Accepted
time: 363ms
memory: 245352kb

input:

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

output:

17928211

result:

ok 1 number(s): "17928211"

Test #11:

score: 0
Accepted
time: 387ms
memory: 244972kb

input:

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

output:

17911522

result:

ok 1 number(s): "17911522"

Test #12:

score: 0
Accepted
time: 367ms
memory: 245004kb

input:

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

output:

17892283

result:

ok 1 number(s): "17892283"

Test #13:

score: 0
Accepted
time: 353ms
memory: 244644kb

input:

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

output:

17873837

result:

ok 1 number(s): "17873837"

Test #14:

score: 0
Accepted
time: 390ms
memory: 244140kb

input:

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

output:

17856701

result:

ok 1 number(s): "17856701"

Test #15:

score: 0
Accepted
time: 372ms
memory: 244120kb

input:

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

output:

17837857

result:

ok 1 number(s): "17837857"

Test #16:

score: 0
Accepted
time: 390ms
memory: 243280kb

input:

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

output:

17819731

result:

ok 1 number(s): "17819731"

Test #17:

score: 0
Accepted
time: 355ms
memory: 215428kb

input:

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

output:

16202000

result:

ok 1 number(s): "16202000"

Test #18:

score: 0
Accepted
time: 331ms
memory: 185032kb

input:

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

output:

21600132

result:

ok 1 number(s): "21600132"

Test #19:

score: 0
Accepted
time: 59ms
memory: 153824kb

input:

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

output:

19862779430431

result:

ok 1 number(s): "19862779430431"

Test #20:

score: 0
Accepted
time: 60ms
memory: 153800kb

input:

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

output:

14601805246666

result:

ok 1 number(s): "14601805246666"

Test #21:

score: 0
Accepted
time: 1ms
memory: 3960kb

input:

1 1
*

output:

0

result:

ok 1 number(s): "0"

Test #22:

score: 0
Accepted
time: 0ms
memory: 4104kb

input:

1 1
.

output:

0

result:

ok 1 number(s): "0"

Test #23:

score: 0
Accepted
time: 0ms
memory: 3988kb

input:

2 2
..
..

output:

6

result:

ok 1 number(s): "6"

Test #24:

score: 0
Accepted
time: 60ms
memory: 153792kb

input:

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

output:

10151159625145

result:

ok 1 number(s): "10151159625145"

Test #25:

score: 0
Accepted
time: 31ms
memory: 153868kb

input:

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

output:

39716328

result:

ok 1 number(s): "39716328"

Test #26:

score: 0
Accepted
time: 354ms
memory: 246896kb

input:

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

output:

35988321

result:

ok 1 number(s): "35988321"

Test #27:

score: 0
Accepted
time: 343ms
memory: 246672kb

input:

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

output:

35981866

result:

ok 1 number(s): "35981866"

Test #28:

score: 0
Accepted
time: 403ms
memory: 246540kb

input:

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

output:

17988153

result:

ok 1 number(s): "17988153"

Test #29:

score: 0
Accepted
time: 360ms
memory: 246972kb

input:

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

output:

35969654

result:

ok 1 number(s): "35969654"

Test #30:

score: 0
Accepted
time: 358ms
memory: 247120kb

input:

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

output:

17982216

result:

ok 1 number(s): "17982216"

Test #31:

score: 0
Accepted
time: 347ms
memory: 245600kb

input:

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

output:

71916090

result:

ok 1 number(s): "71916090"

Test #32:

score: 0
Accepted
time: 351ms
memory: 245688kb

input:

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

output:

71903186

result:

ok 1 number(s): "71903186"

Test #33:

score: 0
Accepted
time: 376ms
memory: 246316kb

input:

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

output:

17973051

result:

ok 1 number(s): "17973051"

Test #34:

score: 0
Accepted
time: 367ms
memory: 244368kb

input:

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

output:

35630636

result:

ok 1 number(s): "35630636"

Test #35:

score: 0
Accepted
time: 364ms
memory: 244460kb

input:

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

output:

44529907

result:

ok 1 number(s): "44529907"

Test #36:

score: 0
Accepted
time: 359ms
memory: 244360kb

input:

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

output:

53426863

result:

ok 1 number(s): "53426863"

Test #37:

score: 0
Accepted
time: 355ms
memory: 244488kb

input:

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

output:

53419301

result:

ok 1 number(s): "53419301"

Test #38:

score: 0
Accepted
time: 359ms
memory: 244072kb

input:

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

output:

26705269

result:

ok 1 number(s): "26705269"

Test #39:

score: 0
Accepted
time: 342ms
memory: 244196kb

input:

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

output:

17799069

result:

ok 1 number(s): "17799069"

Test #40:

score: 0
Accepted
time: 338ms
memory: 244488kb

input:

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

output:

53393629

result:

ok 1 number(s): "53393629"

Test #41:

score: 0
Accepted
time: 348ms
memory: 246720kb

input:

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

output:

98852811

result:

ok 1 number(s): "98852811"

Test #42:

score: 0
Accepted
time: 1ms
memory: 4088kb

input:

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

output:

4498500

result:

ok 1 number(s): "4498500"

Test #43:

score: 0
Accepted
time: 377ms
memory: 244576kb

input:

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

output:

88979547

result:

ok 1 number(s): "88979547"

Test #44:

score: 0
Accepted
time: 371ms
memory: 246524kb

input:

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

output:

35964327

result:

ok 1 number(s): "35964327"