public static void main ( String [ ] args ) {
  Scanner scanner = new Scanner ( System . in ) ;
  String [ ] line = scanner . nextLine ( ) . split ( " " , 3 ) ;
  int a = Integer . parseInt ( line [ 0 ] ) ;
  int b = Integer . parseInt ( line [ 1 ] ) ;
  int c = Integer . parseInt ( line [ 2 ] ) ;
  if ( a + b == c && a - b != c ) {
    System . out . println ( "+" ) ;
  }
  else if ( a + b != c && a - b == c ) {
    System . out . println ( "-" ) ;
  }
  else if ( a + b == c && a - b == c ) {
    System . out . println ( "?" ) ;
  }
  else {
    System . out . println ( "!" ) ;
  }
}

public static void main ( String [ ] args ) { Scanner scanner = new Scanner ( System . in ) ; String [ ] line = scanner . nextLine ( ) . split ( " ▁ " , 3 ) ; int a = Integer . parseInt ( line [ 0 ] ) ; int b = Integer . parseInt ( line [ 1 ] ) ; int c = Integer . parseInt ( line [ 2 ] ) ; if ( a + b == c && a - b != c ) { System . out . println ( " + " ) ; } else if ( a + b != c && a - b == c ) { System . out . println ( " - " ) ; } else if ( a + b == c && a - b == c ) { System . out . println ( " ? " ) ; } else { 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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (array_type element: (type_identifier) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list (string_literal) (decimal_integer_literal))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (decimal_integer_literal)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (decimal_integer_literal)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (decimal_integer_literal)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)) right: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)) right: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)) right: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))))))))