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 Python (3.4.3) (judge verdict: Accepted)

def reach(s, x, y):
    for i in range(x, y-1):
        if s[i] == "#" and s[i+1] == "#":
            return False
    return True
def search(s, x, y):
    for i in range(x-1, y):
        if s[i] == "." and s[i+1] == "." and s[i+2] == ".":
            return True
        if s[i] == "#" and s[i+1] == "#":
            break
    return False

def main():
    n, a, b, c, d = map(int, input().split())
    a -= 1
    b -= 1
    c -= 1
    d -= 1
    s = input().rstrip()
    if reach(s, a, c) and reach(s, b, d):
        if c < d:
            print("Yes")
        else:
            if search(s, b, d):
                print("Yes")
            else:
                print("No")

    else:
        print("No")

if __name__ == "__main__":
    main()