GOC11A - Appending String

You are given a string S, you need to build another string T by expanding S according to the steps below (traversing left to right):

  1. If current character is a letter, append it to T.
  2. If current character is a digit, suppose the digit is N, then do T = N*T. Here N*T means appending T N times. See sample for better understanding.
  3. Go to next character if exists then restart from step 1.

Upon expanding S, you will be given Q queries. For each query you have to print the ith character of the string T.

Hint: After expanding the string S = "a3b2c1" T will be = "aaabaaabc"

Input

The first line will be the number of test cases (t <= 10).

In the first line of each test you will be given a string consisting of lowercase letters and digits. And it is guaranteed that length of T will be no more than 1000.

Next line will contain an integer Q (<= 100000) denoting total numbers of queries. Following Q lines each contains an integer X.

Output

For each query X, you have to print the Xth character of T in a line. If X is greater than the length of T, print -1.

Example

Input:
1
a3b2c1
2
4
5

Output:
b
a

Added by:mahbub
Date:2016-08-26
Time limit:1s-2s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ASM64 GOSU

hide comments
2020-01-14 12:25:44
Getting runtime error
pls help
<snip>

Last edit: 2022-06-11 08:10:46
2017-10-03 09:00:37
Looked like potentially a WA-nightmare, yet AC at first attempt. No zero's in S, also X is 1-indexed. Nice problem.
2017-08-17 02:56:33
By 'length of T will be no more than 1000' it means the length of the actual string T being built from the input string, NOT the input string. Not only the final length will be small, but also 'intermediate' (while building).
2017-03-02 19:19:19
easy one ..
2017-01-24 08:01:26 Anand
The digit in the string can be 0 too.! Costed me 2 WA
2016-09-20 12:26:28 Filip Sollar
dont forget -1 if not in range cost me 1 wa
2016-09-16 14:36:05
Output -1 when x>length of t, costed me a WA! Easy one!!
2016-09-13 08:18:04 |RAMSDEN|
What's the range of X?
2016-08-31 18:02:20
finally ac :)
2016-08-30 14:14:21 Bhumit
Can anyone give tricky testcases?
Getting WA in Java :/
Submission ID - 17612957

Last edit: 2016-08-30 14:21:49
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