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 C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

using System;
using System.Linq;
using System.Collections.Generic;
class Program
{
    static void Main(string[] args)
    {
        string[] s = Console.ReadLine().Split(' ');
        int N = int.Parse(s[0]);
        int A = int.Parse(s[1]) - 1;
        int B = int.Parse(s[2]) - 1;
        int C = int.Parse(s[3]) - 1;
        int D = int.Parse(s[4]) - 1;
        string S = Console.ReadLine();
        bool canOverTake = false;
        for (int i = B; i < D; i++)
        {
            if ((i + 2) < S.Length && S[i + 2] == '#' && 
                (i + 1) < S.Length && S[i + 1] == '#')
            {
                Console.WriteLine("No");
                return;
            }
            if (!canOverTake && i + 3 < S.Length && S[i + 1] == '.' && S[i + 2] == '.' && S[i + 3] == '.')
                canOverTake = true;
        }
        for(int i = A; i < B; i++)
        {
            if ((i + 2) < S.Length && (S[i + 2] == '#' || i + 2 == D)&&
                (i + 1) < S.Length && (S[i + 1] == '#' || i + 2 == D))
            {
                Console.WriteLine("No");
                return;
            }
        }
        if ((C > D && canOverTake) || C < D)
            Console.WriteLine("Yes");
        else
            Console.WriteLine("No");

    }
}