public static void main ( String [ ] args ) {
  int arr [ ] = new int [ 6 ] ;
  Scanner scan = new Scanner ( System . in ) ;
  for ( int i = 0 ;
  i < 6 ;
  i ++ ) arr [ i ] = scan . nextInt ( ) ;
  boolean thereis = false ;
  for ( int i = 0 ;
  i < 4 ;
  i ++ ) {
    for ( int j = i + 1 ;
    j < 5 ;
    j ++ ) {
      for ( int k = j + 1 ;
      k < 6 ;
      k ++ ) {
        int op [ ] = new int [ 3 ] ;
        int t = 0 ;
        for ( int q = 0 ;
        q <= 5 ;
        q ++ ) {
          if ( q != i && q != j && q != k ) {
            op [ t ] = q ;
            t ++ ;
          }
        }
        if ( arr [ i ] + arr [ k ] + arr [ j ] == arr [ op [ 0 ] ] + arr [ op [ 1 ] ] + arr [ op [ 2 ] ] ) {
          thereis = true ;
        }
      }
    }
  }
  if ( thereis ) System . out . println ( "YES" ) ;
  else System . out . println ( "NO" ) ;
}

public static void main ( String [ ] args ) { int arr [ ] = new int [ 6 ] ; Scanner scan = new Scanner ( System . in ) ; for ( int i = 0 ; i < 6 ; i ++ ) arr [ i ] = scan . nextInt ( ) ; boolean thereis = false ; for ( int i = 0 ; i < 4 ; i ++ ) { for ( int j = i + 1 ; j < 5 ; j ++ ) { for ( int k = j + 1 ; k < 6 ; k ++ ) { int op [ ] = new int [ 3 ] ; int t = 0 ; for ( int q = 0 ; q <= 5 ; q ++ ) { if ( q != i && q != j && q != k ) { op [ t ] = q ; t ++ ; } } if ( arr [ i ] + arr [ k ] + arr [ j ] == arr [ op [ 0 ] ] + arr [ op [ 1 ] ] + arr [ op [ 2 ] ] ) { thereis = true ; } } } } if ( thereis ) System . out . println ( " YES " ) ; else System . out . println ( " NO " ) ; }
(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) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (decimal_integer_literal))))) (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)))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))) (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier) value: (false))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (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))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (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: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (binary_expression left: (identifier) right: (identifier))) right: (binary_expression left: (identifier) right: (identifier)))) consequence: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (identifier))) (expression_statement (update_expression (identifier))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (identifier))) right: (array_access array: (identifier) index: (identifier))) right: (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (array_access array: (identifier) index: (decimal_integer_literal))) right: (array_access array: (identifier) index: (array_access array: (identifier) index: (decimal_integer_literal)))) right: (array_access array: (identifier) index: (array_access array: (identifier) index: (decimal_integer_literal)))))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (true))))))))))) (if_statement condition: (parenthesized_expression (identifier)) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))))))