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 Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)


import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			int n = sc.nextInt();
			int a = sc.nextInt() - 1;
			int b = sc.nextInt() - 1;
			int c = sc.nextInt() - 1;
			int d = sc.nextInt() - 1;
			String s = sc.next();
			char[] chs = s.toCharArray();

			char ROCK = '#';

			if (a == c && b == d) {
				System.out.println("Yes");
				return;
			}

			boolean isBeforeDoubleRock = false;
			for (int i = a + 1; i < c; i++) {
				if (chs[i] == ROCK) {
					if (isBeforeDoubleRock) {
						System.out.println("No");
						return;
					}
					isBeforeDoubleRock = true;
				} else {
					isBeforeDoubleRock = false;
				}
			}
			isBeforeDoubleRock = false;
			for (int i = b + 1; i < d; i++) {
				if (chs[i] == ROCK) {
					if (isBeforeDoubleRock) {
						System.out.println("No");
						return;
					}
					isBeforeDoubleRock = true;
				} else {
					isBeforeDoubleRock = false;
				}
			}

			// D < C
			if (d < c) {
				int spaceCount = 0;
				for (int i = b - 1; i < d; i++) {
					if (chs[i] != ROCK) {
						spaceCount++;
					} else {
						spaceCount = 0;
					}
					if (3 <= spaceCount) {
						System.out.println("Yes");
						return;
					}
				}
				System.out.println("No");
			} else {
				System.out.println("Yes");
			}

		}
	}
}