Minimum Excluded

Discussions Toph Problems
1

In a given set of integers, the “mex” or the minimum excluded value is the smallest non-negative int…

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2

I am getting runtime error for the following code:

    BitSet b = new BitSet(1000000001);
    Reader sc = new Reader();
    int n = sc.nextInt();
    while(n-->0) b.set(sc.nextInt());
    System.out.println(b.nextClearBit(0));

any idea why?