A Latin square is an n-by-n array filled with n different Latin letters, each occurring exactly once in each row and once in each column. Write a program that prompts the user to enter the number n and the array of characters, as shown in the sample output, and checks if the input array is a Latin square. The characters are the first n characters starting from A.

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Enter number n: 4 Enter Enter 4 rows of letters separated by spaces: AB C D -Enter BADC -Enter CD BA -Enter DCAB -Enter The input array is a Latin square Enter number n: 3 -Enter Enter 3 rows of letters separated by spaces: AFD JEnter Wrong input: the letters must be from A to C