public static void main ( String [ ] args ) {
  FastReader scan = new FastReader ( ) ;
  String str = scan . nextLine ( ) ;
  int countOne = 0 ;
  int countZero = 0 ;
  int i = 0 ;
  String output = "NO" ;
  while ( i < str . length ( ) ) {
    char ch = str . charAt ( i ) ;
    if ( ch == '1' ) {
      countOne ++ ;
      countZero = 0 ;
      if ( countOne == 7 ) {
        output = "YES" ;
      }
    }
    else {
      countZero ++ ;
      countOne = 0 ;
      if ( countZero == 7 ) {
        output = "YES" ;
      }
    }
    i ++ ;
  }
  System . out . println ( output ) ;
}

public static void main ( String [ ] args ) { FastReader scan = new FastReader ( ) ; String str = scan . nextLine ( ) ; int countOne = 0 ; int countZero = 0 ; int i = 0 ; String output = " NO " ; while ( i < str . length ( ) ) { char ch = str . charAt ( i ) ; if ( ch == '1' ) { countOne ++ ; countZero = 0 ; if ( countOne == 7 ) { output = " YES " ; } } else { countZero ++ ; countOne = 0 ; if ( countZero == 7 ) { output = " YES " ; } } i ++ ; } System . out . println ( output ) ; }
(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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (character_literal))) consequence: (block (expression_statement (update_expression (identifier))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (string_literal)))))) alternative: (block (expression_statement (update_expression (identifier))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (string_literal))))))) (expression_statement (update_expression (identifier))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))