Problem:
Score : 400 points

Problem Statement

There are N squares arranged in a row, numbered 1, 2, ..., N from left to right.
You are given a string S of length N consisting of . and #. If the i-th character of S is #, Square i contains a rock; if the i-th character of S is ., Square i is empty.

In the beginning, Snuke stands on Square A, and Fnuke stands on Square B.

You can repeat the following operation any number of times:

Choose Snuke or Fnuke, and make him jump one or two squares to the right. The destination must be one of the squares, and it must not contain a rock or the other person.

You want to repeat this operation so that Snuke will stand on Square C and Fnuke will stand on Square D.

Determine whether this is possible.

Constraints

4 \leq N \leq 200\ 000

S is a string of length N consisting of . and #.

1 \leq A, B, C, D \leq N

Square A, B, C and D do not contain a rock.

A, B, C and D are all different.

A < B

A < C

B < D

Input

Input is given from Standard Input in the following format:

N A B C D
S

Output

Print Yes if the objective is achievable, and No if it is not.

Sample Input 1

7 1 3 6 7
.#..#..

Sample Output 1

Yes

The objective is achievable by, for example, moving the two persons as follows. (A and B represent Snuke and Fnuke, respectively.)

A#B.#..

A#.B#..

.#AB#..

.#A.#B.

.#.A#B.

.#.A#.B

.#..#AB

Sample Input 2

7 1 3 7 6
.#..#..

Sample Output 2

No

Sample Input 3

15 1 3 15 13
...#.#...#.#...

Sample Output 3

Yes

Solution in Scala (2.11.7) (judge verdict: Wrong Answer)

object Main extends App {
  val in = scala.io.Source.stdin.getLines.toSeq
  val ls = in.head.split(' ').map(_.toInt)
  val S = in.tail.head
  val N = ls(0)
  val A = ls(1)
  val B = ls(2)
  val C = ls(3)
  val D = ls(4)
  private def func(s:String, a:Int, b:Int):Boolean = {
    val sub = s.slice(a, b)
    sub.contains("##")
  }
  private def left():Boolean = {
    val sub = S.slice(0, A)
    sub.matches("\\.\\.\\..*##")
  }
  private def mid():Boolean = {
    val sub = S.slice(A, C)
    !sub.contains("...")
  }
  private def right():Boolean = {
    val sub = S.slice(C, S.size)
    sub.matches("##.*\\.\\.\\.")
  }
  if(func(S, A, C) || func(S, B, D)) println("No")
  //else if(D < C && !S.contains("...")) println("No")
  else if(D < C && (left() || mid() || right()) ) println("No")
  else println("Yes")
}