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: Wrong Answer)

from sys import stdin
N, A, B, C, D = (int(i) for i in input().rstrip().split())
S = stdin.readline().rstrip()
A -= 1
B -= 1
C -= 1
D -= 1
swap_flag = False
swap_able = -1
for itr in range(len(S)):
    if itr < (len(S) - 1) and S[itr] == '#' and S[itr+1] == '#':
        print('No')
        exit()
    if swap_flag == False and 2 <= itr and S[itr] == '.' and S[itr-1] == '.' and S[itr-2] == '.':
        swap_able = itr
        swap_flag = True 
# print(swap_able)
# print(A, B, C, D)
if swap_able != -1:
    if A > B and C < D and S[C-1] == '#' and C < swap_able:
        print('No')
    elif A > B and C < D and C != N and S[C+1] == '#' and C < swap_able:
        print('No')
    elif A < B and D < C and S[D-1] == '#' and D < swap_able:
        print('No')
    elif A < B and D < C and D != N and S[D+1] == '#' and D < swap_able:
        print('No')
    else:
        print('Yes')
else:
    if A > B and C < D and S[C-1] == '#':
        print('No')
    elif A > B and C < D and C != N and S[C+1] == '#':
        print('No')
    elif A < B and D < C and S[D-1] == '#':
        print('No')
    elif A < B and D < C and D != N and S[D+1] == '#':
        print('No')
    else:
        print('Yes')