fn iterate_map(r: felt252, x: felt252) -> felt252 {
r * x * -x
}
// good default: 1000
fn run_test(mut i: felt252) -> felt252 {
// Initial value.
let mut x = 1234567890123456789012345678901234567890;
// Iterate the map.
loop {
x = iterate_map(4, x);
if i == 0 {
break x;
}
i = i - 1;
}
}