代码

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package test;
import java.io.*;
import java.math.*;
import java.util.*;
public class test3 {
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		BufferedReader cc = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter cout = new BufferedWriter(new OutputStreamWriter(System.out));
		int t;t = Integer.parseInt(cc.readLine());
		for(int cas=1 ; cas<=t ; cas++){
			BigInteger aa = new BigInteger(cc.readLine());
			BigInteger ans = aa.multiply(aa).multiply(BigInteger.valueOf(8)).subtract(aa.multiply(BigInteger.valueOf(7))).add(BigInteger.valueOf(1));
			cout.write("Case #"+cas+": ");
			cout.write(ans.toString());
			cout.newLine();
		}
		cout.flush();
		cout.close();
	}
}