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发帖数: 212 | 1 内推君贴一个pass过的code：
class Solution {
public:
void setm1(vector> &board, int x, int y, int m, int n)
{
if (x <0 || x >= m || y < 0 || y >= n)
return;
if (board[x][y] != 'O')
return;
board[x][y] = 'Y';
setm1(board, x-1, y, m, n);
setm1(board, x+1, y, m, n);
setm1(board, x, y-1, m, n);
setm1(board, x, y+1, m, n);
}
void solve(vector> &board) {
int m = board.size();
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