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

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