Description: chessboard fill in N* N on the chessboard (1LT; = Nlt; = 10) Please insert 1,2, ... N2 N2 total number, making any two adjacent few and as a prime number. Fill in the program, such as : Here, we agreed : the upper left corner of the grid must be put in the yard a figure. Output : For a variety of solutions, the first line of output, the first out and as a program with the smallest; If not solved, then the output "NO Answer"
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