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 public static void main(String[] args) throws IOException {
        // 使用BufferedReader读取输入，PrintWriter输出结果
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));

        int T = Integer.parseInt(br.readLine().trim());

        for (int i = 0; i < T; i++) {
            String[] str = br.readLine().split("\\s+");
            long a = Long.parseLong(str[0]);
            long b = Long.parseLong(str[1]);
            long c = Long.parseLong(str[2]);
            long ans = a*b+a*c+b*c;

            out.println(ans);
        }

        out.flush();
        out.close();
        br.close();
    }