Step or Jump solution codechef – CodeMaster was at home due to lockdown and after long hours of playing regular indoor games

Step or Jump solution codechef

CodeMaster was at home due to lockdown and after long hours of playing regular indoor games, he makes one game named “STEP OR JUMP”. It is like a snake and ladder but there are no ladders but only snakes in the game.

There are only two moves possible in this game, they are:

1.STEP (move 1 cell ahead)

2.JUMP (move 2 cells ahead).

    0 1 0 1 0 1 0 0
    1 0 0 1 0 1 0 1
    1 0 0 1 0 0 0 1
    0 0 0 1 0 1 0 0
    0 1 0 0 0 0 1 0
    0 1 0 0 1 0 0 1
    0 0 1 0 0 1 1 0
    0 1 0 0 1 0 0 0

The above matrix depicts the game board of order NxN (where N=8). The chain of ones denotes the single snake, there are more than one snakes in-game. The 1’s may be connected by the same column, diagonally(from both side right or left side).

Note:

1.Mouth Of The Snake: The first one on the upper side of the matrix which is not connected to anyone further is called the mouth of the snake.

2.Tail Of The Snake: The last one of the chain denote the tail of the snake.

3.The body or the tail of the snake is not harmful.

The mouths of all snakes are directed to the upper side of the matrix or board. e.g. in the above matrix(with zero-based indexing) the one at cell(0,1) denote the mouth of the snake and its tail is at cell(2,0).similarly one at cell(3,5) denote the mouth of another snake and its tail is at cell(6,6) and rest of the part of snake(i.e.between the mouth and tell is called as the body of the snake.

CodeMaster wants to find if it is possible to reach at the end cell(0,0) from the start cell(N,0) with the help of given 2 types of moves(i.e. step and jump) and without going in the snake’s mouth..!!!

Rest of the rules as the same as the snake-ladder game-

1.traversing as same…in snake ladder game..(i.e. traverse row by row and after completing a row you have to start new row from the same column)

2.and if caught in the snake’s mouth u will reach the tail of the snake.

Help the CodeMaster to find whether is it possible to reach the endpoint without getting caught in snake’s mouth ,if it is possible then print “Yes” otherwise “No”

Input: Step or Jump solution codechef

  • First line will contain TT, number of testcases.
  • First line contain single integer NN.
  • Next NN lines of each test case contains NN space seperated 1’s or 0’s.

Output: Step or Jump solution codechef

For each testcase, output in a single line string either Yes or No.

Constraints Step or Jump solution codechef

  • 1T101≤T≤10
  • 1M321≤M≤32

Sample Input: Step or Jump solution codechef

      1
      2 
      0 1
      0 1

Sample Output: Step or Jump solution codechef

Yes

SOLUTION

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