// Where's Waldo is a puzzle where the goal is to find Waldo in the picture of a crowd
// In this example, the crowd is a series of numbers, ideally* all prime but one, and Waldo is a non-prime number
// * we don't enforce only one number being non-prime, so there could be multiple Waldos

def isWaldo(field a, field p, field q) -> bool {
    // make sure that p and q are both not one
    assert(p != 1 && q != 1);

    // we know how to factor a
    return a == p * q;
}

// define all
def main(field[3] a, private u32 index, private field p, private field q) -> bool {
    // prover provides the index of Waldo
    return isWaldo(a[index], p, q);
}