write a program, take the score data from the class1 table of the "score. xls" file (part of the data is shown in Figure 1), use the KMeans algorithm to build a model, and output the clustering results (Figure 2).

Requirement: Write KMeans algorithm thought 1, 2, 3... , and then write program code.

\begin{tabular}{|c|c|c|c|} \hline & A & B & C \\ \hline 1 & & & \\ \hline 2 & 1001 & 93 & 87 \\ \hline 3 & 1002 & 85 & 80 \\ \hline 4 & 1003 & 95 & 89 \\ \hline 5 & 1004 & 85 & 74 \\ \hline 6 & 1005 & 64 & 65 \\ \hline 7 & 1006 & 80 & 86 \\ \hline 8 & 1007 & 75 & 86 \\ \hline 9 & 1008 & 88 & 78 \\ \hline 10 & 1009 & 82 & 91 \\ \hline 11 & 1010 & 52 & 50 \\ \hline 12 & 1011 & 98 & 82 \\ \hline 13 & 1012 & 77 & 88 \\ \hline 14 & 1013 & 86 & 85 \\ \hline \end{tabular} 1