static int almostPrimes ( int n ) {
  int ans = 0 ;
  for ( int i = 6 ;
  i <= n ;
  i ++ ) {
    int c = 0 ;
    for ( int j = 2 ;
    j * j <= i ;
    j ++ ) {
      if ( i % j == 0 ) {
        if ( j * j == i ) {
          if ( prime [ j ] ) c ++ ;
        }
        else {
          if ( prime [ j ] ) c ++ ;
          if ( prime [ i / j ] ) c ++ ;
        }
      }
    }
    if ( c == 2 ) ans ++ ;
  }
  return ans ;
}

static int almostPrimes ( int n ) { int ans = 0 ; for ( int i = 6 ; i <= n ; i ++ ) { int c = 0 ; for ( int j = 2 ; j * j <= i ; j ++ ) { if ( i % j == 0 ) { if ( j * j == i ) { if ( prime [ j ] ) c ++ ; } else { if ( prime [ j ] ) c ++ ; if ( prime [ i / j ] ) c ++ ; } } } if ( c == 2 ) ans ++ ; } return ans ; }
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