public class test {

    // Computing the sum of the consecutive integers from 1 to n:
    long n = 10000; // Ten thousand

    void algorithmA() {
        // Algorithm A
        long sum = 0;
        for (long i = 1; i <= n; i++)
            sum = sum + i;
        System.out.println(sum);
    }

    void algorithmB()
    {
        // Algorithm B
        long sum = 0;
        for (long i = 1; 1 <= n; i++)
        {
            for (long j = 1; j <= 1; j++)
                sum = sum + 1;
        }
        System.out.println(sum);
    }

    void algorithmC()
    {
        // Algorithm C
        long sum = n * (n + 1) / 2;
        System.out.println(sum);
    }
}