## Path Running

Given an array of length and starting at the 1st index, determine if it is possible to end exactly on the last index of the array, each time moving to the right by spaces and with indexes that cannot be moved to.

#### Input Specification

The first line will contain the integer , the length of the array, , the amount of spaces you move to the right by each time, and , the number of indexes that you cannot move to. The second line will either contain 1 or 0, 1 being the index can be moved to, and 0 meaning that the index has been blocked.

#### Output Specification

Output `YES`

if it is possible to end exactly on the last index of the array, otherwise output `NO`

.

#### Sample Input 1

```
7 3 2
1 0 1 1 0 1 1
```

#### Sample Output 1

`YES`

## Comments