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- #include<bits/stdc++.h>
- using namespace std;
- bool v[8][8];
- char maze[8][8];
- int dx[4]={0,0,-1,1};
- int dy[4]={-1,1,0,0};
- void dfs(int a,int b){
- if(a==7&&b==7){
- for(int i=0;i<=7;i++){
- for(int j=0;j<=7;j++){
- if(v[i][j]!=0){
- printf(" ");
- }else{
- printf("%c",maze[i][j]);
- }
- }
- cout<<endl;
- }
- }else{
- for(int i=0;i<4;i++){
- int nx=a+dx[i];
- int ny=b+dy[i];
- if(nx>=0&&nx<=7&&ny>=0&&ny<=7&&maze[nx][ny]=='O'&&!v[nx][ny]){
- v[nx][ny]=1;
- dfs(nx,ny);
- v[nx][ny]=0;
- }
- }
- }
- }
- int main(){
- for(int i=0;i<=7;i++){
- for(int j=0;j<=7;j++){
- scanf("%c",&maze[i][j]);
- }
- getchar();
- }
- v[0][0]=1;
- dfs(0,0);
- return 0;
- }
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