public static void main ( String args [ ] ) {
  Scanner s = new Scanner ( System . in ) ;
  int t = s . nextInt ( ) ;
  while ( t -- != 0 ) {
    int n = s . nextInt ( ) ;
    long arr [ ] = new long [ n ] ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) {
      arr [ i ] = s . nextLong ( ) ;
    }
    long suffix [ ] = new long [ n ] ;
    suffix [ n - 1 ] = arr [ n - 1 ] ;
    int count = 0 ;
    for ( int i = n - 2 ;
    i >= 0 ;
    i -- ) {
      suffix [ i ] = Math . min ( suffix [ i + 1 ] , arr [ i ] ) ;
      if ( arr [ i ] > suffix [ i ] ) {
        count ++ ;
      }
    }
    System . out . println ( count ) ;
  }
}

public static void main ( String args [ ] ) { Scanner s = new Scanner ( System . in ) ; int t = s . nextInt ( ) ; while ( t -- != 0 ) { int n = s . nextInt ( ) ; long arr [ ] = new long [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { arr [ i ] = s . nextLong ( ) ; } long suffix [ ] = new long [ n ] ; suffix [ n - 1 ] = arr [ n - 1 ] ; int count = 0 ; for ( int i = n - 2 ; i >= 0 ; i -- ) { suffix [ i ] = Math . min ( suffix [ i + 1 ] , arr [ i ] ) ; if ( arr [ i ] > suffix [ i ] ) { count ++ ; } } System . out . println ( count ) ; } }
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