public static void main ( String [ ] args ) {
  int N = 8 , Z = 4 ;
  int row [ ] = {
    4 , 6 };
    int col [ ] = {
      3 , 8 };
      int r = row . length ;
      int d = col . length ;
      System . out . print ( subgrids ( N , Z , row , col , r , d ) ) ;
    }
    
public static void main ( String [ ] args ) { int N = 8 , Z = 4 ; int row [ ] = { 4 , 6 } ; int col [ ] = { 3 , 8 } ; int r = row . length ; int d = col . length ; System . out . print ( subgrids ( N , Z , row , col , r , d ) ) ; }
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