杭电 HDU ACM 1418 抱歉

抱歉

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)

Total Submission(s): 3863    Accepted Submission(s): 1637

Problem Description

非常抱歉,本来兴冲冲地搞一场练习赛,由于我准备不足,出现很多数据的错误,现在这里换一个简单的题目:

前几天在网上查找ACM资料的时候,看到一个中学的奥数题目,就是不相交的曲线段分割平面的问题,我已经发到论坛,并且lxj 已经得到一个结论,这里就不

多讲了,下面有一个类似的并且更简单的问题:

如果平面上有n个点,并且每个点至少有2条曲线段和它相连,就是说,每条曲线都是封闭的,同时,我们规定:

1)所有的曲线段都不相交;

2)但是任意两点之间可以有多条曲线段。

如果我们知道这些线段把平面分割成了m份,你能知道一共有多少条曲线段吗?

Input

输入数据包含n和m,n=0,m=0表示输入的结束,不做处理。

所有输入数据都在32位整数范围内。

Output

输出对应的线段数目。

Sample Input

3 2
0 0

Sample Output

3

Author

lcy

欧拉公式:

简单多面体的顶点数V、面数F及棱数E间有关系 

V+F-E=2

(此题:顶点+面数-2=棱数)

#include<stdio.h>
int main()
{
	_int64 n,m;
	while(scanf("%I64d%I64d",&n,&m)!=EOF)
	{
		if(n==0&&m==0)
			break;
		else
			printf("%I64d\n",n+m-2);
	}
	return 0;
}
时间: 2024-10-28 10:28:35

杭电 HDU ACM 1418 抱歉的相关文章

杭电 HDU ACM 1397 Goldbach&#39;s Conjecture

Goldbach's Conjecture Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 4976    Accepted Submission(s): 1901 Problem Description Goldbach's Conjecture: For any even number n greater than or equal

杭电 HDU ACM 5186 zhx&#39;s submissions

zhx's submissions Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 1892    Accepted Submission(s): 507 Problem Description As one of the most powerful brushes, zhx submits a lot of code on many

杭电 HDU ACM 1025 Constructing Roads In JGShining&#39;s Kingdom

Constructing Roads In JGShining's Kingdom Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 17732    Accepted Submission(s): 5023 Problem Description JGShining's kingdom consists of 2n(n is no mo

杭电HDU ACM Uncle Tom&#39;s Inherited Land*(二分图匹配 建模)

Uncle Tom's Inherited Land* Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 2496    Accepted Submission(s): 1028 Special Judge Problem Description Your old uncle Tom inherited a piece of land f

杭电 HDU ACM 圆桌会议

圆桌会议 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3356    Accepted Submission(s): 2351 Problem Description HDU ACM集训队的队员在暑假集训时经常要讨论自己在做题中遇到的问题.每当面临自己解决不了的问题时,他们就会围坐在一张圆形的桌子旁进行交流,经过大家的讨论后一般没有

杭电 HDU ACM 1046 Tempter of the Bone

Tempter of the Bone Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 83458    Accepted Submission(s): 22740 Problem Description The doggie found a bone in an ancient maze, which fascinated him a

杭电 HDU ACM 1496 Equations

Equations Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 6065    Accepted Submission(s): 2455 Problem Description Consider equations having the following form: a*x1^2+b*x2^2+c*x3^2+d*x4^2=0 a,

杭电 HDU ACM 1283 最简单的计算机

最简单的计算机 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 5238    Accepted Submission(s): 2967 Problem Description 一个名叫是PigHeadThree的研究组织设计了一台实验用的计算机,命名为PpMm.PpMm只能执行简单的六种命令A,B,C,D,E,F:只有二个内存M1,M

杭电 HDU ACM 1213 How Many Tables

How Many Tables Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 17049    Accepted Submission(s): 8349 Problem Description Today is Ignatius' birthday. He invites a lot of friends. Now it's dinn