from "field" import FIELD_SIZE_IN_BITS;
import "utils/pack/bool/unpack";
import "utils/casts/u64_from_bits";

def main(field input) -> u64 {
    bool[FIELD_SIZE_IN_BITS] bits = unpack(input);
    return u64_from_bits(bits[FIELD_SIZE_IN_BITS-64..]);
}