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TRICOUNT - Counting Triangles |
We define the LEVEL of a triangle as in the following illustrative image:
Task: Your task is very easy. All you have to do is to count all triangles in the biggest one (Level N).
Input
The first line of the input contains an integer T (T ≤ 10000) - the number of test cases and T lines follow. Each line contains an integer N (1 ≤ N ≤ 106) which is the level of the triangle in that test case.
Output
For each test case, you should write a seperate line: the number of triangles in the biggest one (Level N). (All answers will fit within the range of a 64-bit integer)
Example
Input:
3
1
2
3
Output:
1
5
13
Source limit is 500 bytes.
Added by: | nha.duong |
Date: | 2007-08-05 |
Time limit: | 1s |
Source limit: | 500B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 ERL JS-RHINO NODEJS OBJC PERL6 SQLITE VB.NET |
Resource: | Trần Huy Hưng |
hide comments
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2015-06-16 14:32:17 Pradd
Use long long in place of int in C . Long Long = AC, Int = WA |
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2015-06-15 14:16:39 Gaurav Jain
My solution http://ideone.com/XC1fwx is showing runtime error. Can anyone help me to detect it? |
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2015-06-12 20:10:57
lame question... formula oriented.. using recursion fails for N > 10^5 Then I thought that maybe there are too many recursion calls. I implemented using while loop. That gives a TLE. Finally just plugged in the formula and it accepted it. phew. waste of an hour. |
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2015-05-30 14:02:21 Rishabh Joshi
using pow() caused WA. |
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2015-05-28 08:46:21 Babloo
http://www.transum.org/Software/SW/Starter_of_the_day/starter_September23.asp may be useful |
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2015-05-27 00:26:59
http://jwilson.coe.uga.edu/emt725/Bob/Count.Triangles.II.html this properly shows the idea |
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2015-05-23 20:33:42 Anton Chigurh
Because of the source code limitation, I literally had to minify my Java code the same way JavaScript files are minified. |
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2015-05-07 00:18:45 scyth3r
"telescoping series" made calculations easy...... |
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2015-04-21 15:45:07 Phong
@Singh - Thank you I got it :D |
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2015-04-21 08:47:37 hareesh
Test Cases (Use them to get the pattern) 1 : 1 2 : 5 3 : 13 4 : 27 5 : 48 6 : 78 7 : 118 8 : 170 9 : 235 10 : 315 |