QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#672493 | #7733. Cool, It’s Yesterday Four Times More | wangxiaorui# | WA | 33ms | 8812kb | C++14 | 1.9kb | 2024-10-24 17:01:58 | 2024-10-24 17:01:58 |
Judging History
answer
#include<bits/stdc++.h>
#define pos(x,y) ((x-1)*m+y)
#define fail(x,y) (x<1||y<1||x>n||y>m||a[x][y]=='O')
using namespace std;
const int X[]={1,0,-1,0};
const int Y[]={0,1,0,-1};
char a[1005][1005],vis[1005][1005];
int n,m,f[1005][1005],ans;
void dfs(int xa,int ya,int xb,int yb)
{
int p1=pos(xa,ya),p2=pos(xb,yb);
// cerr<<xa<<' '<<ya<<' '<<xb<<' '<<yb<<':'<<p1<<' '<<p2<<' '<<f[p1][p2]<<endl;
if(f[p1][p2]) return;
vis[p1][p2]=1;
for(int i=0;i<4;i++)
{
int px=xa+X[i],py=ya+Y[i],qx=xb+X[i],qy=yb+Y[i];
int f1=fail(px,py),f2=fail(qx,qy);
if(f1) continue;
if(f2)
{
f[p1][p2]=1;
continue;
}
// cerr<<px<<' '<<py<<' '<<qx<<' '<<qy<<endl;
if(!vis[pos(px,py)][pos(qx,qy)]) dfs(px,py,qx,qy);
f[p1][p2]|=f[pos(px,py)][pos(qx,qy)];
}
}
void sol()
{
cin>>n>>m;
memset(f,0,sizeof(f));
memset(vis,0,sizeof(vis));
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
cin>>a[i][j];
}
}
ans=0;
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
int res=1;
if(a[i][j]=='O') continue;
for(int k=1;k<=n;k++)
{
for(int l=1;l<=m;l++)
{
vis[k][l]=0;
}
}
for(int k=1;k<=n;k++)
{
for(int l=1;l<=m;l++)
{
if(a[k][l]=='O'||i==k&&j==l) continue;
dfs(i,j,k,l);
res&=f[pos(i,j)][pos(k,l)];
// cerr<<i<<','<<j<<' '<<k<<','<<l<<' '<<f[pos(i,j)][pos(k,l)]<<endl;
}
}
ans+=res;
}
}
cout<<ans<<endl;
}
int main()
{
int t;
cin>>t;
while(t--) sol();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 8780kb
input:
4 2 5 .OO.. O..O. 1 3 O.O 1 3 .O. 2 3 OOO OOO
output:
3 1 0 0
result:
ok 4 lines
Test #2:
score: -100
Wrong Answer
time: 33ms
memory: 8812kb
input:
200 2 4 OOO. OO.. 2 3 OOO .O. 3 3 O.O OOO OO. 4 1 . . O O 1 2 .O 1 1 . 2 5 .OO.. .O.O. 2 1 O O 1 1 O 1 3 .OO 5 1 O O . O . 5 2 O. .. O. .O .. 5 3 ... ... .OO ..O OOO 3 5 ..O.O .O.O. .OO.O 5 2 .O OO O. O. .. 2 1 O O 3 5 .O.OO O...O ..OO. 1 5 ..... 5 1 O . O . . 5 3 OOO OO. .OO OO. O.O 2 1 O . 5 2 O. ...
output:
3 0 0 2 1 1 3 0 0 1 0 7 9 4 4 0 5 5 2 0 1 6 4 5 2 0 0 5 3 3 1 4 1 0 7 5 2 3 7 3 0 6 2 2 2 0 4 6 6 3 3 2 3 5 2 1 0 3 3 4 4 2 2 0 7 6 4 7 5 3 2 5 2 1 2 1 4 0 0 2 5 1 4 6 6 1 6 2 2 3 4 5 2 1 0 1 9 3 4 11 0 3 2 1 0 0 4 3 1 4 3 8 3 0 3 6 2 5 1 3 3 4 0 2 11 2 2 4 0 4 4 6 2 1 2 3 0 5 0 16 4 3 2 6 0 8 3 3 1...
result:
wrong answer 17th lines differ - expected: '6', found: '5'