public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int runs = sc . nextInt ( ) ;
  while ( runs -- > 0 ) {
    int size = sc . nextInt ( ) ;
    String s = sc . next ( ) ;
    char [ ] arr = s . toCharArray ( ) ;
    if ( ! ( s . contains ( ">" ) && s . contains ( "<" ) ) ) System . out . println ( size ) ;
    else {
      int count = 0 ;
      for ( int i = 0 ;
      i < size ;
      i ++ ) {
        if ( i == 0 ) {
          if ( arr [ size - 1 ] == '-' || arr [ i ] == '-' ) count ++ ;
        }
        else if ( i == size - 1 ) {
          if ( arr [ size - 2 ] == '-' || arr [ size - 1 ] == '-' ) count ++ ;
        }
        else {
          if ( arr [ i ] == '-' || arr [ i - 1 ] == '-' ) count ++ ;
        }
      }
      System . out . println ( count ) ;
    }
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int runs = sc . nextInt ( ) ; while ( runs -- > 0 ) { int size = sc . nextInt ( ) ; String s = sc . next ( ) ; char [ ] arr = s . toCharArray ( ) ; if ( ! ( s . contains ( " > " ) && s . contains ( " < " ) ) ) System . out . println ( size ) ; else { int count = 0 ; for ( int i = 0 ; i < size ; i ++ ) { if ( i == 0 ) { if ( arr [ size - 1 ] == ' - ' || arr [ i ] == ' - ' ) count ++ ; } else if ( i == size - 1 ) { if ( arr [ size - 2 ] == ' - ' || arr [ size - 1 ] == ' - ' ) count ++ ; } else { if ( arr [ i ] == ' - ' || arr [ i - 1 ] == ' - ' ) count ++ ; } } System . out . println ( count ) ; } } }
(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 (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)))) (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)))) (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: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (unary_expression operand: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (string_literal))))))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier)))) alternative: (block (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 (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (character_literal)) right: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (character_literal)))) consequence: (expression_statement (update_expression (identifier))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (character_literal)) right: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (character_literal)))) consequence: (expression_statement (update_expression (identifier))))) alternative: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (character_literal)) right: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (character_literal)))) consequence: (expression_statement (update_expression (identifier))))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))))))