static void coef ( int n ) {
  c [ 0 ] = 1 ;
  for ( int i = 0 ;
  i < n ;
  c [ 0 ] = - c [ 0 ] , i ++ ) {
    c [ 1 + i ] = 1 ;
    for ( int j = i ;
    j > 0 ;
    j -- ) c [ j ] = c [ j - 1 ] - c [ j ] ;
  }
}

static void coef ( int n ) { c [ 0 ] = 1 ; for ( int i = 0 ; i < n ; c [ 0 ] = - c [ 0 ] , i ++ ) { c [ 1 + i ] = 1 ; for ( int j = i ; j > 0 ; j -- ) c [ j ] = c [ j - 1 ] - c [ j ] ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (expression_statement (assignment_expression left: (array_access array: (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: (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (unary_expression operand: (array_access array: (identifier) index: (decimal_integer_literal)))) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (binary_expression left: (decimal_integer_literal) right: (identifier))) right: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (identifier))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (array_access array: (identifier) index: (identifier))))))))))