public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  PrintWriter out = new PrintWriter ( System . out ) ;
  int T = in . nextInt ( ) ;
  for ( int cn = 1 ;
  cn <= T ;
  cn ++ ) {
    int N = in . nextInt ( ) ;
    int M = in . nextInt ( ) ;
    int [ ] [ ] a = new int [ N ] [ M ] ;
    for ( int i = 0 ;
    i < N ;
    i ++ ) {
      for ( int j = 0 ;
      j < M ;
      j ++ ) {
        a [ i ] [ j ] = in . nextInt ( ) ;
      }
    }
    out . println ( String . format ( "Case #%d: %s" , cn , ( solve ( a ) ? YES : NO ) ) ) ;
  }
  out . flush ( ) ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; PrintWriter out = new PrintWriter ( System . out ) ; int T = in . nextInt ( ) ; for ( int cn = 1 ; cn <= T ; cn ++ ) { int N = in . nextInt ( ) ; int M = in . nextInt ( ) ; int [ ] [ ] a = new int [ N ] [ M ] ; for ( int i = 0 ; i < N ; i ++ ) { for ( int j = 0 ; j < M ; j ++ ) { a [ i ] [ j ] = in . nextInt ( ) ; } } out . println ( String . format ( " Case ▁ # % d : ▁ % s " , cn , ( solve ( a ) ? YES : NO ) ) ) ; } out . flush ( ) ; }
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