public static void main ( String args [ ] ) {
  Scanner sc = new Scanner ( System . in ) ;
  n = sc . nextInt ( ) ;
  m = sc . nextInt ( ) ;
  int arr [ ] [ ] = new int [ n ] [ m ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    for ( int j = 0 ;
    j < m ;
    j ++ ) arr [ i ] [ j ] = sc . nextInt ( ) ;
  }
  if ( check ( arr ) ) {
    System . out . println ( "YES" ) ;
    return ;
  }
  for ( int i = 0 ;
  i < m - 1 ;
  i ++ ) {
    for ( int j = i + 1 ;
    j < m ;
    j ++ ) {
      for ( int k = 0 ;
      k < n ;
      k ++ ) {
        int temp = arr [ k ] [ i ] ;
        arr [ k ] [ i ] = arr [ k ] [ j ] ;
        arr [ k ] [ j ] = temp ;
      }
      if ( check ( arr ) ) {
        System . out . println ( "YES" ) ;
        return ;
      }
      for ( int k = 0 ;
      k < n ;
      k ++ ) {
        int temp = arr [ k ] [ i ] ;
        arr [ k ] [ i ] = arr [ k ] [ j ] ;
        arr [ k ] [ j ] = temp ;
      }
    }
  }
  System . out . println ( "NO" ) ;
}

public static void main ( String args [ ] ) { Scanner sc = new Scanner ( System . in ) ; n = sc . nextInt ( ) ; m = sc . nextInt ( ) ; int arr [ ] [ ] = new int [ n ] [ m ] ; for ( int i = 0 ; i < n ; i ++ ) { for ( int j = 0 ; j < m ; j ++ ) arr [ i ] [ j ] = sc . nextInt ( ) ; } if ( check ( arr ) ) { System . out . println ( " YES " ) ; return ; } for ( int i = 0 ; i < m - 1 ; i ++ ) { for ( int j = i + 1 ; j < m ; j ++ ) { for ( int k = 0 ; k < n ; k ++ ) { int temp = arr [ k ] [ i ] ; arr [ k ] [ i ] = arr [ k ] [ j ] ; arr [ k ] [ j ] = temp ; } if ( check ( arr ) ) { System . out . println ( " YES " ) ; return ; } for ( int k = 0 ; k < n ; k ++ ) { int temp = arr [ k ] [ i ] ; arr [ k ] [ i ] = arr [ k ] [ j ] ; arr [ k ] [ j ] = temp ; } } } System . out . println ( " NO " ) ; }
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dimensions: (dimensions_expr (identifier))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))))) (if_statement condition: (parenthesized_expression (method_invocation name: (identifier) arguments: (argument_list (identifier)))) consequence: (block 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(decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)))) (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)))) (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (identifier))))) (if_statement condition: (parenthesized_expression (method_invocation name: (identifier) arguments: (argument_list (identifier)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) (return_statement))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)))) (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)))) (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (identifier))))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))))