bugs are placed on square vertices ,
Where the bug number is placed on vertix number
If the day is , the bugs will go cloclwise such that the bug number will go one step , the bug number will go two steps , the bug number will go four steps , the bug will not move.
If the day is , the bugs will go counterclockwise such that the bug number will go four steps , the bug number will go three steps , the bug number will go five steps , the bug will not move
If the day is , the bugs will not move , the bugs will go steps clockwise .
Today is sunday , and the bugs didn't start moving yet
step is the length of one side of the square
In which day of the week "at the end of the day" will the four bugs be on the same vertix for the first time ?
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Sorry , my english is not perfect ,
The difference between the bugs 2 , 3 is odd at the start , every day , the difference between these two bugs will be changed by an even number , so , they will not be on the same vertix in any day , which means , that the four bugs will not be on the same vertix at the end of any day 😀