The error I made during the solving is that I forget to change the number from [1..9] to [0..8] use

```
int temp=board[i][j]-'1'+1;
```

But should use

```
int temp=board[i][j]-'1';
```

As we use the array dimention is 9 , so the index is [0..8]

Here is the AC code:

```
class Solution {
public:
bool isValidSudoku(vector<vector<char>>& board) {
bool c1[9][9]={false}, c2[9][9]={false}, c3[9][9]={false};
for(int i=0; i<9; i++){
for(int j=0; j<9; j++){
if(board[i][j]!='.'){
int temp=board[i][j]-'1';
int index=(i/3)*3+j/3;
if(c1[i][temp] || c2[j][temp] || c3[index][temp]) return false;
c1[i][temp]=c2[j][temp]=c3[index][temp]=true;
}
}
}
return true;
}
};
```