HDU1241Oil Deposits 求联通块数量 Sample Input 1 1 * 3 5 *@*@* **@** *@*@* 1 8 @@****@* 5 5  ****@ *@@*@ *@**@ @@@*@ @@**@ 0 0  Sample Output 0 1 2 2 DFS:   #include <iostream>#include<cstdio>#include <io