209248600 ~~~~~ int a = x; int b = 0;

for(int i= 29;i>=0;i--) { if((x & (1 << i)) > 0) { continue; }

if((2*x - a - b) >= (2 << i))
    {
        // bug(a,b);
        a += (1 << i);
        b += (1 << i);
    }
}

~~~~~

When I am making the start from i= 30 or more, it makes a negative. Why?

Note: I defined int as long long. Still, It's doing the same.

Can anyone please explain.