type byte = u8;
type uint32 = u32;
type UInt32Array<N> = uint32[N];

type matrix<R, C> = field[R][C];

def fill<R, C>(field v) -> matrix<R, C> {
    return [[v; C]; R];
}

def main(uint32 a, uint32 b) -> (UInt32Array<2>, matrix<2, 4>) {
    UInt32Array<2> res = [a, b];
    matrix<2, 4> m = fill(1);
    return (res, m);
}