spoj#KGSS. Maximum Sum

Maximum Sum

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You are given a sequence A[1], A[2], ..., A[N] ( 0 ≤ A[i] ≤ 10^8 , 2 ≤ N ≤ 10^5 ). There are two types of operations and they are defined as follows:

Update:

This will be indicated in the input by a 'U' followed by space and then two integers i and x.

U i x, 1 ≤ i ≤ N, and x, 0 ≤ x ≤ 10^8.

This operation sets the value of A[i] to x.

Query:

This will be indicated in the input by a 'Q' followed by a single space and then two integers i and j.

Q x y, 1 ≤ x < y ≤ N.

You must find i and j such that x ≤ i, j ≤ y and i != j, such that the sum A[i]+A[j] is maximized. Print the sum A[i]+A[j].

Input

The first line of input consists of an integer N representing the length of the sequence. Next line consists of N space separated integers A[i]. Next line contains an integer Q, Q ≤ 10^5, representing the number of operations. Next Q lines contain the operations.

Output

Output the maximum sum mentioned above, in a separate line, for each Query.

Example

Input:
5
1 2 3 4 5
6
Q 2 4
Q 2 5
U 1 6
Q 1 5
U 1 7
Q 1 5

Output:
7
9
11
12
Warning: large Input/Output data, be careful with certain languages 
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		<a href="/users/mortal_beast">mortal_beast</a>: 
							<span style="font-size: 10px; color: #666;">2021-06-06 15:17:15</span>
	<br>
			<p>Good for begineers</p>
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		<a href="/users/rimuru_404">rimuru_404</a>: 
							<span style="font-size: 10px; color: #666;">2021-06-05 05:38:54</span>
	<br>
			<p>After some silly mistakes AC. Nice problem for segment tree beginners </p>
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		<a href="/users/mukund007">mukund007</a>: 
							<span style="font-size: 10px; color: #666;">2021-05-30 08:43:03</span>
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			<p>Fenwick Tree go go</p>
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		<a href="/users/saurabh_kl">saurabh_kl</a>: 
							<span style="font-size: 10px; color: #666;">2021-02-11 21:05:39</span>
	<br>
			<p>Accepting Java solution, I don't know it gives TLE with Scanner or not but FastReader is okay</p>
			<b>Last edit: 2021-02-11 21:06:32</b>
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		<a href="/users/kanisht09">kanisht09</a>: 
							<span style="font-size: 10px; color: #666;">2021-01-22 21:47:48</span>
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			<p>Solved it using segment trees 2 different ways</p>
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		<a href="/users/saurav7192">saurav7192</a>: 
							<span style="font-size: 10px; color: #666;">2020-08-06 10:56:08</span>
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			<p>Aced finally..............................</p>
			<b>Last edit: 2020-08-06 12:30:50</b>
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		<a href="/users/skj_helloworld">skj_helloworld</a>: 
							<span style="font-size: 10px; color: #666;">2020-08-04 12:34:34</span>
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			<p>accepted in one go</p>
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		<a href="/users/chefpr7">chefpr7</a>: 
							<span style="font-size: 10px; color: #666;">2020-07-02 09:09:33</span>
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			<p>AC in One Go!! Nice practice problem for newbies!</p>
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		<a href="/users/wargang">wargang</a>: 
							<span style="font-size: 10px; color: #666;">2020-07-01 13:25:12</span>
	<br>
			<p>very nice problem!!


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		<a href="/users/sarthak_19">sarthak_19</a>: 
							<span style="font-size: 10px; color: #666;">2020-06-29 06:21:49</span>
	<br>
			<p>AC in one GO!!!!!!!!


Good for Beginners

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