QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#328584 | #833. Cells Blocking | HBYoutze | WA | 528ms | 246232kb | C++14 | 1.4kb | 2024-02-15 21:36:20 | 2024-02-15 21:36:20 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
//#define mod 1000000007
using namespace std;
int n,m,dp[3010][3010],dp2[3010][3010],cnt,huan,ans;
char c[3010][3010];
vector<int> ve[6010];
signed main()
{
cin>>n>>m;
dp[1][1]=1;dp2[n][m]=1;
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
cin>>c[i][j];
dp[i][j]|=dp[i-1][j];
dp[i][j]|=dp[i][j-1];
if(c[i][j]=='*') dp[i][j]=0;
else cnt++;
}
}
for(int i=n;i;i--)
{
for(int j=m;j;j--)
{
dp2[i][j]|=dp2[i+1][j];
dp2[i][j]|=dp2[i][j+1];
if(c[i][j]=='*') dp2[i][j]=0;
}
}
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
if(dp[i][j]&&dp2[i][j])
{
ve[i+j].push_back(i);huan++;
}
else c[i][j]='*';
}
}
if(huan==0)
{
cout<<cnt*(cnt-1)/2;return 0;
}
huan=0;
for(int i=2;i<=n+m;i++)
{
if(ve[i].size()==1) ans+=(cnt-(++huan));
}
for(int i=2;i<=n+m;i++)
{
if(ve[i].size()==1) continue;
int l=ve[i][1],r=ve[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&&ve[j].size()!=1) ans++;
}
}
for(int i=2;i<=n+m;i++)
{
if(ve[i].size()==1) continue;
int l=ve[i][0],r=ve[i][ve[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&&ve[j].size()!=1) ans++;
}
}
cout<<ans;
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 7868kb
input:
3 3 ... ... ...
output:
17
result:
ok 1 number(s): "17"
Test #2:
score: 0
Accepted
time: 0ms
memory: 7828kb
input:
3 3 .** .*. ...
output:
15
result:
ok 1 number(s): "15"
Test #3:
score: 0
Accepted
time: 0ms
memory: 7748kb
input:
3 4 **** .... ****
output:
6
result:
ok 1 number(s): "6"
Test #4:
score: 0
Accepted
time: 1ms
memory: 7792kb
input:
5 5 *.... .*.*. ***** *.*** ..*..
output:
66
result:
ok 1 number(s): "66"
Test #5:
score: 0
Accepted
time: 0ms
memory: 7836kb
input:
10 10 ...***.*.. **...*.*** ...***.*.. .**...*.*. .*****..*. ..*.****.* .**...**** ..*..*.*.* *.*.**.... ....**...*
output:
1378
result:
ok 1 number(s): "1378"
Test #6:
score: 0
Accepted
time: 508ms
memory: 245948kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
17999999
result:
ok 1 number(s): "17999999"
Test #7:
score: 0
Accepted
time: 477ms
memory: 246232kb
input:
3000 3000 ...................................................................................................................*......................................................................................................................................................................*..........
output:
17981671
result:
ok 1 number(s): "17981671"
Test #8:
score: 0
Accepted
time: 509ms
memory: 245968kb
input:
3000 3000 .....................................................................................................................................................................................................................................................................................................
output:
17963615
result:
ok 1 number(s): "17963615"
Test #9:
score: 0
Accepted
time: 516ms
memory: 245656kb
input:
3000 3000 .........................................................................................................*...........................................................................................................................................................................................
output:
17945165
result:
ok 1 number(s): "17945165"
Test #10:
score: 0
Accepted
time: 503ms
memory: 245564kb
input:
3000 3000 ......................................................................................................................................*........................................................................................................................................*.....................
output:
17928211
result:
ok 1 number(s): "17928211"
Test #11:
score: 0
Accepted
time: 479ms
memory: 245124kb
input:
3000 3000 ...........................................*.........................................................................................................................................................................................................................................................
output:
17911522
result:
ok 1 number(s): "17911522"
Test #12:
score: 0
Accepted
time: 469ms
memory: 245092kb
input:
3000 3000 ..............................*................................................................................................................*.....................................................................................................................................................
output:
17892283
result:
ok 1 number(s): "17892283"
Test #13:
score: 0
Accepted
time: 502ms
memory: 244780kb
input:
3000 3000 ................................................................*....*................................................................................................................................................................................*..............................................
output:
17873837
result:
ok 1 number(s): "17873837"
Test #14:
score: 0
Accepted
time: 489ms
memory: 244276kb
input:
3000 3000 ............................................................................................*.............................................................................*.....................................................................................................*....................
output:
17856701
result:
ok 1 number(s): "17856701"
Test #15:
score: 0
Accepted
time: 517ms
memory: 244400kb
input:
3000 3000 ......................................*..........................................................................................................................................................*...................................................................................................
output:
17837857
result:
ok 1 number(s): "17837857"
Test #16:
score: 0
Accepted
time: 507ms
memory: 243304kb
input:
3000 3000 .................................................................................................................................................................................................................................*...................................................................
output:
17819731
result:
ok 1 number(s): "17819731"
Test #17:
score: 0
Accepted
time: 500ms
memory: 215648kb
input:
3000 3000 ......**.....*.......*.*..........*..*...............**.............*.......*......*........*...*.....*.*.................*......*....*.........*....................*.................*.......................*.......*..*.*.......*.......................*..........*..*......................*...
output:
16202000
result:
ok 1 number(s): "16202000"
Test #18:
score: -100
Wrong Answer
time: 528ms
memory: 185036kb
input:
3000 3000 ..................*....*....*...*.*.............*.............*....*.*..*...*...*...*....*.................*...*.*.***...*....*......*.......**...*.......*.*...**...*...*...**.........*..........*.....*.*....*..*.......*.........*..*.....*...............**.......*.....*.*..*.*.*........*.....
output:
21600125
result:
wrong answer 1st numbers differ - expected: '21600132', found: '21600125'