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Check out your link to the problem. "The requested URL was not found on this server.".
You need faster IO.
cinandcoutare too slow ( even usingios::sync_with_stdio(false)) .Even
scanfandprintfare slow for this problem.I used them and got TLE. After that I usedgetchar_unlocked()and got AC .scanf() printf() is enough. I got AC using scanf() and printf().
my code having faster i/o function.
Faster input maybe, but not output. Don't use
endl, use'\n'instead. Even better if you replace the whole thing withprintf("%d\n", query(1,0,n-1,x,y));Also you could try replacing every
2 * nodewithnode << 1and every2 * node + 1with(node << 1) | 1, maybe it will help.