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$$F=m^{2}$$

sss
sss
sss

import vertex.Vertex

public static void main(String args[]) {
        System.out.println("错的不是我,是这个世界");
}

public class Main {
    public static void main(String[] arsg) {
        try {
            throw new Exception("TIJ4 12.01");
        } catch(Exception e) {
            System.out.println(e.getMessage());
            e.printStackTrace(System.out);
        }
    }
}