Level 1 AleppoCPC Training

bool getBit(ll n, ll idx)
{
    ll x = 1ll<<idx;
    x = x&n;
    if(x>0)return 1;
    else return 0;
}

ll setBit(ll n, ll idx)
{
    ll x = 1ll<<idx;
    x = x|n;
    return x;
}

ll clearBit(ll n, ll idx)
{
    ll x = 1ll<<idx;
    if(getBit(n,idx) == 1)
    {
        x = (x^n);
        return x;
    }
    else return n;
}