##### Folklore

Perform the dynamic range minimum query.

#### Input Specification

The first line of input will contain two space-separated integers: , the number of elements in the array, and , the number of operations to perform.

The next lines each contain one non-negative integer less than . Specifically, line number contains element of the array. Note that the array has zero-based indexing.

The following lines contain one operation each. Each operation is
either of the form `M i x`

, indicating that element number is to be changed to , or the form ```
Q i
j
```

indicating that your program is to find the
minimum value of the elements in the index range (that is,
inclusive) in the current state of the array and print this value to
standard output.

#### Output Specification

One integer, on its own line, for each `Q`

statement: the answer to the
query.

#### Sample Input

```
5 10
35232
390942
649675
224475
18709
Q 1 3
M 4 475689
Q 2 3
Q 1 3
Q 1 2
Q 3 3
Q 2 3
M 2 645514
M 2 680746
Q 0 4
```

#### Sample Output

```
224475
224475
224475
390942
224475
224475
35232
```

## Comments