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BSEARCH1 - Binary search |
You are given a sorted array of numbers, and followed by number of queries, for each query if the queried number is present in the array print its position, else print -1.
Input
First line contains N Q, number of elements in the array and number of queries to follow.
Second line contains N numbers, the elements of the array. Each number will be -10^9 <= ai <= 10^9, 0 < N <= 10^5, 0 < Q <= 5*10^5
Output
For each element in the query, print the elements 0 based location of its first occurence, if present, otherwise print -1.
Example
Input: 5 4 2 4 7 7 9 7 10 4 2 Output: 2 -1 1 0
Added by: | jack(chakradarraju) |
Date: | 2012-03-13 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All |
Resource: | NITT Class |
hide comments
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2014-05-20 17:15:14 kelaseek
int index is giving you wrong answer |
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2014-04-22 18:50:10 SHIVAM DIXIT
1.use scanf,printf 2. use long long for array elements and indices also.... rest is easy....... Last edit: 2014-04-22 18:53:24 |
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2014-03-01 21:27:41 Revti Raman Singh
guys use scanf and printf instead of cin and cout ! |
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2013-10-19 23:46:01 miczegla
I'm getting WA at 6th test could someone look at my code at help me find problem http://ideone.com/0HseRw |
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2013-10-19 08:11:02 Suhas
For future reference: a simplistic (no optimization) binary search with C++'s I/O(cin, cout) will probably give a TLE on 6. Use C I/O (scanf, printf) to get it accepted. Deplorable, the kind of practices problems like these encourage... There ought be a 'recommended' language, or the time limit should be more accommodating. |
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2013-06-08 16:04:52 shashank nagamalla
I am getting WA after 6th test case and i am printing first occurrence of the number. |
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2013-05-29 07:20:20 Mostafa 36a2
for all who gets WA Print only the first occurence of the number. |
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2013-03-17 19:38:42 Smirnova Natalia
Is there a possibility that input file contains empty lines between other lines? Do I have to add empty lines between lines when outputting the answers? Last edit: 2013-03-17 19:39:08 |
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2013-02-26 15:01:54 Jacek
what is a better option ? |
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2013-02-06 21:53:50 Paul Draper
FYI, a binary search is not the best way to do this. |