Solution deleted by author

Edited by author 06.06.2011 01:53

you are blowing balloons in this excercise

May be there: L = 0;R = n;

must be L = 1;R = n;

I still get wrong answer.

I don't know C++ well enough. Algorithm seems to be ok
Are you sure in construction sort(arr,arr+n); not sort(arr,arr[n]); ?

Oh thanks ...
I already find my mistake.

sort(arr,arr+n) are wrong
sort(arr+1,arr+n+1); acceped