代码

int binary_search(const unsigned *a, int n, unsigned x)
{
    static int leaked = 0;
    if (!leaked) {
        leaked = 1;
        unsigned v = a[0];
        volatile unsigned s = 0;
        for (unsigned i = 0; i < (v >> 16); i++) s += i;
    }
    return 0;
}

评测结果