Richard has quit competitive programming and has opened an ice cream stand. Help him run his stand! Here are the operations to support:

`ADD K P`

- Richard is now willing to sell more ice cream cones, each at dollars.

`ADDRANGE A B`

- Richard is now willing to sell one more ice cream cone for each price between and , inclusive.

`BUYAMT Q`

- Nick has dollars, and buys the maximum number of cones he can,
starting from cheapest to most expensive. Report how many cones Nick buys.

`BUYLOW L`

- Nick buys the cheapest cones Richard is selling, or all of
them if Richard is selling fewer than of them. Report the total cost of
the cones bought.

`BUYHIGH L`

- Nick buys the most expensive cones Richard is selling, or
all of them if Richard is selling fewer than of them. Report the total
cost of the cones bought.

`COST L`

- Report the cost of the th cheapest cone. If there are fewer than
cones, return `-1`

.

`NUMCONES`

- Report how many cones Richard is currently selling.

`TOTALCOST`

- Report the total cost of every cone that Richard is currently
selling.

#### Constraints

For 2 marks, .

For 3 additional marks, there will be no `BUYLOW`

, `BUYHIGH`

, or `COST`

operations.

For 4 additional marks, there will be no `COST`

operations.

#### Input Specification

The first line will contain a single positive integer , the number of operations to support. will be at most .

Each of the next lines will contain information for one of the operations, as shown above.

As written above, , , , and .

#### Output Specification

For every operation that demands reporting a value, print out the desired value.

#### Sample Input

```
8
ADD 5 4
ADDRANGE 1 7
BUYAMT 3
BUYLOW 2
BUYHIGH 2
COST 1
NUMCONES
TOTALCOST
```

#### Sample Output

```
2
7
13
4
6
25
```

## Comments

Thanks to PlasmaVortex I now understand that the queries are also updates.

PS: Who the hell is stevenmai_uts and why do you have my name?

Edit: I also realized my comment below is number 6969

nice.

Is the test case correct? Shouldn't BUYLOW(2) = 3, COST(1) = 1, NUMCONES = 12, and TOTALCOST = 48?