public static void solve ( int n ) {
  if ( n == 1 ) System . out . println ( - 1 ) ;
  else {
    System . out . print ( 2 ) ;
    for ( int i = 0 ;
    i < n - 1 ;
    i ++ ) {
      System . out . print ( 3 ) ;
    }
    System . out . println ( " " ) ;
  }
}

public static void solve ( int n ) { if ( n == 1 ) System . out . println ( - 1 ) ; else { System . out . print ( 2 ) ; for ( int i = 0 ; i < n - 1 ; i ++ ) { System . out . print ( 3 ) ; } System . out . println ( " ▁ " ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (unary_expression operand: (decimal_integer_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (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: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))))))