public static void main ( String [ ] args ) {
  FastReader fr = new FastReader ( ) ;
  long a [ ] = new long [ 3 ] ;
  a [ 0 ] = fr . nextLong ( ) ;
  a [ 1 ] = fr . nextLong ( ) ;
  a [ 2 ] = fr . nextLong ( ) ;
  Arrays . parallelSort ( a ) ;
  long result = 0 ;
  if ( a [ 0 ] == 0 && a [ 1 ] == 1 ) {
    System . out . println ( a [ 2 ] ) ;
  }
  else if ( a [ 0 ] == a [ 1 ] ) {
    System . out . println ( a [ 0 ] ) ;
  }
  else if ( a [ 2 ] == a [ 1 ] ) {
    System . out . println ( a [ 2 ] ) ;
  }
  else if ( ( a [ 1 ] - a [ 0 ] ) % 2 == 1 ) {
    result += a [ 2 ] - a [ 1 ] ;
    result += a [ 1 ] ;
    System . out . println ( result ) ;
  }
  else {
    result += ( a [ 1 ] - a [ 0 ] ) / 2 ;
    result += ( a [ 1 ] + a [ 0 ] ) / 2 ;
    System . out . println ( result ) ;
  }
}

public static void main ( String [ ] args ) { FastReader fr = new FastReader ( ) ; long a [ ] = new long [ 3 ] ; a [ 0 ] = fr . nextLong ( ) ; a [ 1 ] = fr . nextLong ( ) ; a [ 2 ] = fr . nextLong ( ) ; Arrays . parallelSort ( a ) ; long result = 0 ; if ( a [ 0 ] == 0 && a [ 1 ] == 1 ) { System . out . println ( a [ 2 ] ) ; } else if ( a [ 0 ] == a [ 1 ] ) { System . out . println ( a [ 0 ] ) ; } else if ( a [ 2 ] == a [ 1 ] ) { System . out . println ( a [ 2 ] ) ; } else if ( ( a [ 1 ] - a [ 0 ] ) % 2 == 1 ) { result += a [ 2 ] - a [ 1 ] ; result += a [ 1 ] ; System . out . println ( result ) ; } else { result += ( a [ 1 ] - a [ 0 ] ) / 2 ; result += ( a [ 1 ] + a [ 0 ] ) / 2 ; System . out . println ( result ) ; } }
(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)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (decimal_integer_literal))))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal)) right: (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (decimal_integer_literal)))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (decimal_integer_literal)))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (decimal_integer_literal)))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal)))) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal))))) (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (decimal_integer_literal)))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal)))) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (decimal_integer_literal)))) right: (decimal_integer_literal)))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier)))))))))))