public static void main ( String ar [ ] ) throws Exception {
  BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  int t = Integer . parseInt ( br . readLine ( ) ) ;
  while ( t -- > 0 ) {
    int n = Integer . parseInt ( br . readLine ( ) ) ;
    long arr [ ] = new long [ n ] ;
    String str [ ] = br . readLine ( ) . split ( " " ) ;
    long totalSum = 0 ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      arr [ i ] = Long . parseLong ( str [ i ] ) ;
      totalSum += arr [ i ] ;
    }
    long sum2 = Math . max ( KADENES ( arr , 0 , n - 2 ) , KADENES ( arr , 1 , n - 1 ) ) ;
    if ( totalSum > sum2 ) {
      System . out . println ( "YES" ) ;
    }
    else {
      System . out . println ( "NO" ) ;
    }
  }
}

public static void main ( String ar [ ] ) throws Exception { BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ; int t = Integer . parseInt ( br . readLine ( ) ) ; while ( t -- > 0 ) { int n = Integer . parseInt ( br . readLine ( ) ) ; long arr [ ] = new long [ n ] ; String str [ ] = br . readLine ( ) . split ( " ▁ " ) ; long totalSum = 0 ; for ( int i = 0 ; i < n ; i ++ ) { arr [ i ] = Long . parseLong ( str [ i ] ) ; totalSum += arr [ i ] ; } long sum2 = Math . max ( KADENES ( arr , 0 , n - 2 ) , KADENES ( arr , 1 , n - 1 ) ) ; if ( totalSum > sum2 ) { System . out . println ( " YES " ) ; } else { System . out . println ( " NO " ) ; } } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier) dimensions: (dimensions))) (throws (type_identifier)) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (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 (identifier))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list (string_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: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))))) (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation name: (identifier) arguments: (argument_list (identifier) (decimal_integer_literal) (binary_expression left: (identifier) right: (decimal_integer_literal)))) (method_invocation name: (identifier) arguments: (argument_list (identifier) (decimal_integer_literal) (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (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))))))))))