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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#576644 | #7733. Cool, It’s Yesterday Four Times More | Y_J_Y | RE | 3ms | 13880kb | C++14 | 1.9kb | 2024-09-19 21:24:42 | 2024-09-19 21:24:42 |
Judging History
answer
#pragma GCC optimize(3,"Ofast","inline")
#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
string s[2010];
const int limit=6200;
bitset<limit>BIT[1005][1005];
int dx[4]={1,0,-1,0};int dy[4]={0,-1,0,1};
int n,m;int vis[1005][1005];
void BFS(int x,int y) {
queue<pair<int,int> >q;
q.push({x,y});
while(!q.empty()) {
auto f=q.front();q.pop();
if(vis[f.first][f.second]) continue;
vis[f.first][f.second]=1;
for(int i=0;i<4;i++) {
int nx=f.first+dx[i];
int ny=f.second+dy[i];
if(nx<1||ny<1||nx>n||ny>m) continue;
if(s[nx][ny]=='O') {
continue;
}
int DX=nx-x+n;int DY=ny-y+m;
BIT[x][y][DX*(2*m-1)+DY]=1;
q.push({nx,ny});
}
}
}
int main() {
cin.sync_with_stdio(false); cin.tie(0); cout.tie(0);
int T;cin>>T;
while(T--) {
cin>>n>>m;
for(int i=1;i<=n;i++) {
cin>>s[i];
s[i]='O'+s[i];s[i]+='O';
}
for(int i=0;i<=m+1;i++) {
s[n+1][i]='O';
s[0][i]='O';
}
for(int i=1;i<=n;i++) {
for(int j=1;j<=m;j++) {
if(s[i][j]=='O') continue;
for(int k=1;k<=n;k++) {
for(int g=1;g<=m;g++) {
vis[k][g]=0;
}
}
BFS(i,j);
// cout<<i<<" "<<j<<":"<<endl;
// cout<<BIT[i][j]<<endl;
}
}
int ans=0;
for(int i=1;i<=n;i++) {
for(int j=1;j<=m;j++) {
if(s[i][j]=='O') continue;
int flag=0;
for(int k=1;k<=n;k++) {
for(int g=1;g<=m;g++) {
if(s[k][g]=='O') continue;
if(k==i&&g==j) continue;
// bitset<limit>temp;
if((BIT[i][j]&BIT[k][g])!=BIT[i][j]) {
continue;
}
else {
// cout<<i<<" "<<j<<" "<<k<<" "<<g<<endl;
flag=1;break;
}
}
}
if(flag==0) {
// cout<<i<<" "<<j<<endl;
ans++;
}
}
}
cout<<ans<<endl;
//clear
for(int i=1;i<=n;i++) {
for(int j=1;j<=m;j++) {
BIT[i][j].reset();
}
}
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 5660kb
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: 0
Accepted
time: 2ms
memory: 7776kb
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 6 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 8 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:
ok 200 lines
Test #3:
score: 0
Accepted
time: 3ms
memory: 13880kb
input:
50 10 9 OOOO.O... O...O.OOO .....O... ..OO..O.O ...O..O.O ..OOO..O. ..OOO...O .OO.O..OO .O.O.OO.. .O..O.O.O 10 10 .O.OOO.OO. ...OOOOOOO ...O.O..O. .O.O..O... .O.O.OO..O ..OO.O..OO O....O..OO OO...OOOOO OO.OO.O..O .O.O.OOOOO 10 8 O..OOO.O O.OOOO.. O..OO.OO OO..OO.. .OOO..O. .OO.OO.O OOO..OO. ..O..OO....
output:
31 40 13 25 40 37 27 29 20 26 25 29 21 29 21 31 32 31 33 34 25 31 18 25 41 28 20 45 20 29 18 21 27 28 35 13 20 17 32 29 28 23 23 23 24 18 28 17 35 24
result:
ok 50 lines
Test #4:
score: -100
Runtime Error
input:
5 1 1000 ....O..OO..O..O..OO...OOO.OOOO.O...O....OOOOO.....OO..OOOO.O..O....OOOO..OO..OOOO......O.O.O..O..OO.OO.OO.O....O.O.O.O.O.OO..O.O.OO..O..OO..O.OOO...O...O.O.O..O....O.OO...O..O...O.OOO..OO.O..O.OO.O.O..OOOO..O.OO.O.O....O.OO.......OOOO....O.O.O.O..OOO.O.OO.OOO..O...O.O.O.O.OO.O.OOOO...O.OO.....