public static void solve ( InputReader in ) {
  int n = in . readInt ( ) ;
  int ans = 0 ;
  while ( n > 1 ) {
    ans ++ ;
    n /= 2 ;
  }
  System . out . println ( ans + 1 ) ;
}

public static void solve ( InputReader in ) { int n = in . readInt ( ) ; int ans = 0 ; while ( n > 1 ) { ans ++ ; n /= 2 ; } System . out . println ( ans + 1 ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (update_expression (identifier))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))))