Special pythagorean triplet

Special pythagorean triplet is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

Task

The following problem is taken from Project Euler

Ring

<lang ring> load "stdlib.ring" see "working..." + nl

time1 = clock() for a = 1 to 1000

    for b = a+1 to 1000   
        for c = b+1 to 1000
            if (pow(a,2)+pow(b,2)=pow(c,2))
                if a+b+c = 1000
                   see "a = " + a + " b = " + b + " c = " + c + nl
                   exit 3
                ok
            ok
         next
    next

next

time2 = clock() time3 = time2/1000 - time1/1000 see "Elapsed time = " + time3 + " s" + nl see "done..." + nl </lang>

Output:

working...
a = 200 b = 375 c = 425
Elapsed time = 497.61 s
done...