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int fib(int n) pure
{

    int a{ 0 };
    int b{ 1 };
    while (n-- > 1)
    {
        const int t{ a };
        a = b;
        b += t;
    }
    return b;}



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b(48, 51, 54);">}</span></code></pre></div><br><br></div></div>

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