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rat_in_maze.cpp
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#include<iostream>
using namespace std;
bool issafe(int** arr, int x, int y, int n){
if(x<n && y<n && arr[x][y]==1){
return true;
}
return false;
}
bool ratinMaze(int** arr, int x, int y, int n, int** solArr){
if(x==n-1 && y==n-1){
solArr[x][y]=1;
return true;
}
if(issafe(arr, x, y, n)){
solArr[x][y]=1;
if(ratinMaze(arr, x+1, y, n, solArr)){
return true;
}
if(ratinMaze(arr, x, y+1, n, solArr)){
return true;
}
solArr[x][y]=0;
return false;
}
return false;
}
int main(){
int n;
cin>>n;
int** arr=new int*[n];
for(int i=0; i<n; i++){
arr[i]=new int[n];
}
for(int i=0; i<n; i++){
for(int j=0; j<n; j++){
cin>>arr[i][j];
}
}
int** solArr=new int*[n];
for(int i=0; i<n; i++){
solArr[i] = new int[n];
for(int j=0; j<n; j++){
solArr[i][j]=0;
}
}
if(ratinMaze(arr, 0, 0, n, solArr)){
for(int i=0; i<n; i++){
for(int j=0; j<n; j++){
cout<<solArr[i][j];
}cout<<endl;
}
}
return 0;
}