x = 9462362647;
x = -9462362647;

x = "9462362647"; // does not work because const char* conflicts with long long

// Use these instead
x = std::string("9462362647");
x = BigInt("9462362647");
x = "9462362647"_N;
x = "-9462362647"_N;

BigInt x = 1;
for (BigInt i = 2; i <= 100; i++) x *= i;
std::cout << x << '\n';

BigInt last = 0, current = 1;
for (BigInt i = 2; i <= 500; i++) {
    BigInt next = last + current;
    last = current;
    current = next;
}
std::cout << current << '\n';

BigInt x = 
    "73086464360023780882673032521418893232027492683609"
    "59856979754918308001067438239264676441905590147466"
    "11142268275451620299424657792591853521328628130486"
    "99896179762587328476774585962790097287531937391133"
    "21508956671487680577026783056695345897644618723791"
    "50385078336836700355139513200459082974750893348108"
    "76710930587907958417310347056715199414332960389780"
    "25061452170976837720035028106172214358060585125050"
    "81949516004385986922371585980745374386064107263952"
    "96940303818897733791815776431886498732972138893052"_N;
BigInt count = 0;
while (x > 0) {
    count++;
    x &= (x - 1);
}
std::cout << count << '\n';

BigInt a = 69, b = 420, res = 1;
while (b > 0) {
    if ((b & 1) > 0) res = res * a;
    a = a * a;
    b >>= 1;
}
std::cout << res << '\n';

BigInt::to_binary();

std::cout << "666182560353385381510864290614"_N.to_binary() << '\n';