public static void main ( String [ ] args ) {
  try {
    Scanner sc = new Scanner ( System . in ) ;
    String str = sc . next ( ) ;
    sc . close ( ) ;
    if ( str . length ( ) <= 7 ) System . out . println ( "NO" ) ;
    else {
      String check1 = "1111111" ;
      String check2 = "0000000" ;
      if ( str . contains ( check1 ) || str . contains ( check2 ) ) System . out . println ( "YES" ) ;
      else System . out . println ( "NO" ) ;
    }
  }
  catch ( Exception e ) {
    return ;
  }
}

public static void main ( String [ ] args ) { try { Scanner sc = new Scanner ( System . in ) ; String str = sc . next ( ) ; sc . close ( ) ; if ( str . length ( ) <= 7 ) System . out . println ( " NO " ) ; else { String check1 = "1111111" ; String check2 = "0000000" ; if ( str . contains ( check1 ) || str . contains ( check2 ) ) System . out . println ( " YES " ) ; else System . out . println ( " NO " ) ; } } catch ( Exception e ) { return ; } }
(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 (try_statement 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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) alternative: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_literal))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_literal))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (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)))))))) (catch_clause (catch_formal_parameter (catch_type (type_identifier)) name: (identifier)) body: (block (return_statement))))))