static double solve ( ) {
  double len = L ;
  for ( int i = 0 ;
  i < N ;
  i ++ ) {
    double b = len / VA ;
    len = b * VB ;
  }
  return len ;
}

static double solve ( ) { double len = L ; for ( int i = 0 ; i < N ; i ++ ) { double b = len / VA ; len = b * VB ; } return len ; }
(method_declaration (modifiers) type: (floating_point_type) name: (identifier) parameters: (formal_parameters) body: (block (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (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 (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (identifier)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))))) (return_statement (identifier))))