QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#141399#6534. Peg Solitairecy1999AC ✓1ms3624kbC++201.2kb2023-08-17 11:37:022023-08-17 11:37:05

Judging History

你现在查看的是最新测评结果

  • [2023-08-17 11:37:05]
  • 评测
  • 测评结果:AC
  • 用时:1ms
  • 内存:3624kb
  • [2023-08-17 11:37:02]
  • 提交

answer

#include<bits/stdc++.h>

using namespace std;

const int N=7,dir[4][2]={{1,0},{-1,0},{0,1},{0,-1}};
int a[N][N],n,m,k,ans=10;

void dfs(){
	
//	for(int x=1; x<=n; x++,putchar('\n'))
//		for(int y=1; y<=m; y++) cout<<a[x][y]<<' ';
	int cc=0;
	for(int x=1; x<=n; x++){
		for(int y=1; y<=m; y++){
			if(!a[x][y]) continue;
			for(int k=0; k<4; k++){
				int xx=x+dir[k][0],yy=y+dir[k][1];
				if(xx<1||yy<1||xx>n||yy>m) continue;
				if(xx+dir[k][0]<1||yy+dir[k][1]<1||xx+dir[k][0]>n||yy+dir[k][1]>m) continue;
				if(a[xx][yy]==0) continue;
				if(a[xx+dir[k][0]][yy+dir[k][1]]) continue;
				a[xx][yy]=0;
				a[x][y]=0;
				a[xx+dir[k][0]][yy+dir[k][1]]=1;
				dfs();
				cc++;
				a[x][y]=1;
				a[xx][yy]=1;
				a[xx+dir[k][0]][yy+dir[k][1]]=0;
			}
		}
	}
	
	if(!cc){
		int cnt=0;
		for(int i=1; i<=n; i++){
			for(int j=1; j<=m; j++){
				cnt+=a[i][j];
			}
		}
		ans=min(ans,cnt);
	}
}

void solve(){
	ans=10;
	cin>>n>>m>>k;
	memset(a,0,sizeof a);
	for(int i=1; i<=k; i++){
		int x,y;
		cin>>x>>y;
		a[x][y]=1;
	}
	dfs();
	cout<<ans<<'\n';
}

int main(){
	
	int T;
	cin>>T;
	while(T--) solve();
	
	return 0;
}

/*

3
3 4 5
2 2
1 2
1 4
3 4
1 1
1 3 3
1 1
1 2
1 3
2 1 1
2 1

*/

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3340kb

input:

3
3 4 5
2 2
1 2
1 4
3 4
1 1
1 3 3
1 1
1 2
1 3
2 1 1
2 1

output:

2
3
1

result:

ok 3 number(s): "2 3 1"

Test #2:

score: 0
Accepted
time: 1ms
memory: 3624kb

input:

20
2 1 2
1 1
2 1
5 1 3
3 1
2 1
4 1
3 3 6
1 2
2 2
1 1
2 3
3 1
3 2
4 4 4
2 3
3 1
3 2
1 2
1 1 1
1 1
5 2 6
3 2
4 1
2 1
5 2
2 2
5 1
1 3 1
1 2
1 5 1
1 5
4 6 5
4 6
4 4
2 3
4 3
1 6
6 6 3
2 4
1 3
2 1
2 2 2
2 1
1 1
5 3 4
2 2
5 1
4 3
3 2
6 5 6
5 5
6 5
2 4
2 1
3 4
1 4
2 6 5
1 6
2 1
1 4
2 3
1 3
3 5 6
2 1
3 3
1 5...

output:

2
2
3
1
1
2
1
1
3
3
2
1
3
3
2
1
3
1
2
2

result:

ok 20 numbers

Test #3:

score: 0
Accepted
time: 1ms
memory: 3448kb

input:

20
2 1 1
2 1
4 3 2
4 3
1 1
6 4 6
4 3
5 4
4 2
3 2
3 4
2 3
3 6 4
3 1
2 6
2 4
3 5
6 6 6
3 3
3 6
4 2
3 2
4 1
1 4
3 3 1
1 1
2 3 2
2 2
2 1
3 2 2
1 2
2 2
3 4 5
2 1
3 4
3 1
2 2
3 2
2 5 5
1 5
2 3
2 5
1 4
2 2
5 6 6
5 1
2 2
1 4
5 3
4 4
1 1
2 3 4
1 1
1 2
2 2
2 1
2 3 4
1 1
2 1
1 2
2 2
6 3 6
4 2
4 1
1 3
6 2
3 3
2...

output:

1
2
2
4
4
1
1
1
2
2
6
2
2
3
4
1
1
1
3
2

result:

ok 20 numbers

Test #4:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

20
1 5 3
1 2
1 3
1 1
5 6 6
5 4
2 4
4 4
4 6
2 5
3 3
5 2 4
4 1
3 1
4 2
5 2
6 3 6
3 1
5 2
3 2
4 1
4 3
3 3
5 3 5
5 2
2 2
3 1
4 3
3 2
6 1 4
3 1
5 1
1 1
4 1
3 5 6
1 1
2 1
3 4
1 5
2 2
3 3
2 5 2
2 5
2 1
5 4 6
1 3
4 3
2 2
1 2
3 3
2 3
2 3 3
2 3
1 1
1 3
1 1 1
1 1
1 1 1
1 1
1 1 1
1 1
6 4 5
2 1
6 2
3 2
1 2
4 2
5...

output:

2
1
2
2
1
2
3
2
2
3
1
1
1
3
2
2
2
3
2
1

result:

ok 20 numbers

Test #5:

score: 0
Accepted
time: 1ms
memory: 3452kb

input:

20
6 6 6
2 4
3 4
3 3
4 3
4 2
5 2
6 6 6
2 4
3 4
3 3
4 3
4 2
5 2
6 6 6
2 4
3 4
3 3
4 3
4 2
5 2
6 6 6
2 4
3 4
3 3
4 3
4 2
5 2
6 6 6
2 4
3 4
3 3
4 3
4 2
5 2
6 6 6
2 4
3 4
3 3
4 3
4 2
5 2
6 6 6
2 4
3 4
3 3
4 3
4 2
5 2
6 6 6
2 4
3 4
3 3
4 3
4 2
5 2
6 6 6
2 4
3 4
3 3
4 3
4 2
5 2
6 6 6
2 4
3 4
3 3
4 3
4 2
5...

output:

2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2

result:

ok 20 numbers