#include
#define N 10
main()
{int x, mid, lo, hi;
static int a[N]={ 3, 5, 7, 9, 11, 13, 15, 17, 19, 21 };
int *p=a;
scanf( "%d", &x );
lo=___(1)___; hi=N-1;
while(lo*(p+__(3)__) ) lo=mid+1;
else hi=__(4)__;
}
if(lo___ (5)____hi) printf("Found %d at %d\n", x, mid);
else printf("%d not found\n", x);
}
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