public static void main ( String [ ] args ) {
  long a = scanner . nextInt ( ) ;
  for ( int i = 0 ;
  i < a ;
  i ++ ) {
    long num = scanner . nextInt ( ) ;
    for ( long j = 0 ;
    j < num ;
    j ++ ) {
      if ( num > 1 ) {
        if ( j == 0 ) System . out . print ( 2 ) ;
        else System . out . print ( 3 ) ;
      }
      else System . out . print ( - 1 ) ;
    }
    System . out . println ( ) ;
  }
}

public static void main ( String [ ] args ) { long a = scanner . nextInt ( ) ; for ( int i = 0 ; i < a ; i ++ ) { long num = scanner . nextInt ( ) ; for ( long j = 0 ; j < num ; j ++ ) { if ( num > 1 ) { if ( j == 0 ) System . out . print ( 2 ) ; else System . out . print ( 3 ) ; } else System . out . print ( - 1 ) ; } System . out . println ( ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) 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)))) (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: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (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 (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (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 (decimal_integer_literal)))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal)))))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (unary_expression operand: (decimal_integer_literal)))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list)))))))