Counting Triangles
Time Limit : 2000/1000ms (Java/Other) Memory Limit : 65536/32768K (Java/Other)
Total Submission(s) : 3 Accepted Submission(s) : 2
Problem Description
Given an equilateral triangle with n the length of its side, program to count how many triangles in it.
Input
The length n (n <= 500) of the equilateral triangle's side, one per line.
process to the end of the file
Output
The number of triangles in the equilateral triangle, one per line.
Sample Input
1 2 3
Sample Output
1 5 13
Author
JIANG, Jiefeng
Source
ZOJ Monthly, June 2003