编程介的小学生 2019-06-25 20:38 采纳率: 20.5%
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国际象棋里的2皇后的问题,怎么使用C语言的程序的设计的代码的编写的过程的方式实现的呢

Problem Description
Everyone knows about the "eight queens problem", but today you will solve a different one.
We are given triangle lattice of side n, as shown in the Figure below. A queen on the lattice can move along a straight line parallel to any of the sides of the triangle. How many queens can be placed on the lattice at most, without any two queens attacking each other?

Input
Each test case contains a single integer N (1<=N<=10^10), indicating the side of the triangle. The input is terminated by a set starting with N = 0. This set should not be processed.

Output
For each test case, output on a line the number of the queens can be placed on the lattice without any two queens attacking each other.

Sample Input
1
2
0

Sample Output
1
1

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