public static void main ( String [ ] args ) throws Exception {
  Scanner in = new Scanner ( System . in ) ;
  int test = 10 ;
  if ( test == 0 ) in = new Scanner ( new FileReader ( file ) ) ;
  String [ ] str = in . nextLine ( ) . split ( " " ) ;
  int m = Integer . valueOf ( str [ 0 ] ) , n = Integer . valueOf ( str [ 1 ] ) ;
  String [ ] grid = new String [ m ] ;
  int [ ] start = new int [ m ] , end = new int [ m ] ;
  Arrays . fill ( start , - 1 ) ;
  for ( int i = 0 ;
  i < m ;
  i ++ ) {
    grid [ i ] = in . nextLine ( ) ;
    for ( int j = 0 ;
    j < n ;
    j ++ ) {
      if ( grid [ i ] . charAt ( j ) == 'W' ) {
        if ( start [ i ] == - 1 ) start [ i ] = j ;
        end [ i ] = j ;
      }
    }
  }
  while ( m > 0 && start [ m - 1 ] < 0 ) m -- ;
  ;
}

public static void main ( String [ ] args ) throws Exception { Scanner in = new Scanner ( System . in ) ; int test = 10 ; if ( test == 0 ) in = new Scanner ( new FileReader ( file ) ) ; String [ ] str = in . nextLine ( ) . split ( " ▁ " ) ; int m = Integer . valueOf ( str [ 0 ] ) , n = Integer . valueOf ( str [ 1 ] ) ; String [ ] grid = new String [ m ] ; int [ ] start = new int [ m ] , end = new int [ m ] ; Arrays . fill ( start , - 1 ) ; for ( int i = 0 ; i < m ; i ++ ) { grid [ i ] = in . nextLine ( ) ; for ( int j = 0 ; j < n ; j ++ ) { if ( grid [ i ] . charAt ( j ) == ' W ' ) { if ( start [ i ] == - 1 ) start [ i ] = j ; end [ i ] = j ; } } } while ( m > 0 && start [ m - 1 ] < 0 ) m -- ; ; }
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