static void Preprocess ( ) {
  arr [ 0 ] [ 0 ] = 1 ;
  for ( int i = 1 ;
  i <= 1000 ;
  ++ i ) {
    arr [ i ] [ 0 ] = 1 ;
    for ( int j = 1 ;
    j < i ;
    ++ j ) {
      arr [ i ] [ j ] = ( arr [ i - 1 ] [ j - 1 ] + arr [ i - 1 ] [ j ] ) % mod ;
    }
    arr [ i ] [ i ] = 1 ;
  }
}

static void Preprocess ( ) { arr [ 0 ] [ 0 ] = 1 ; for ( int i = 1 ; i <= 1000 ; ++ i ) { arr [ i ] [ 0 ] = 1 ; for ( int j = 1 ; j < i ; ++ j ) { arr [ i ] [ j ] = ( arr [ i - 1 ] [ j - 1 ] + arr [ i - 1 ] [ j ] ) % mod ; } arr [ i ] [ i ] = 1 ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters) body: (block (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (decimal_integer_literal)) index: (decimal_integer_literal)) right: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (decimal_integer_literal)) right: (decimal_integer_literal))) (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 (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (binary_expression left: (parenthesized_expression (binary_expression left: (array_access array: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (array_access array: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) index: (identifier)))) right: (identifier)))))) (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (decimal_integer_literal)))))))