比赛 20100420 评测结果 AAATTTT
题目名称 圆桌会议B 最终得分 42
用户昵称 lc 运行时间 0.000 s
代码语言 C++ 内存使用 0.00 MiB
提交时间 2010-04-20 09:25:03
显示代码纯文本
#include<iostream>
#include<cstdlib>
#include<cmath>
#include<cstring>
using namespace std;
const int maxS = 10000,maxn = 41;
int C,N,AnsCnt,Path[maxn];
int Ans[maxS][maxn];
bool Mark[maxn],Dislike[maxn][maxn];


void prep()
{
	scanf("%d%d",&C,&N);
	if (C==0) exit(0);
	for (int i=1; i<=N; i++)
	{
		for (int j=1; j<=N; j++)
		{
			int d;
			scanf("%d",&d);
			Dislike[i][j] = (d==1);
		}
	}
	for (int i=1; i<=N; i++)
		for (int j=1; j<=N; j++)
			Dislike[i][j] = Dislike[i][j] || Dislike[j][i];
}

bool Repeat()
{
	for (int i=1; i<=AnsCnt; i++)
	{
		bool ok = false;
		for (int j=2; j<=N; j++)
			if (Ans[i][j]!=Path[N-j+2])
			{
				ok = true; break;
			}
		if (!ok) return true;
	}
	return false;
}

void total()
{
	if (Repeat()) return;
	AnsCnt++;
	memcpy(Ans[AnsCnt],Path,sizeof(int)*(N+1));
}

void DFs(int k)
{
	if (k >N)
	{
		if (!Dislike[Path[N]][1]) total();
		return;
	}
	for (int i=1; i<=N; i++)
		if (!Mark[i] && !Dislike[Path[k-1]][i])
		{
			Path[k] = i;
			Mark[i] = true;
			DFs(k+1);
			Path[k] = 0;
			Mark[i] = false;
		}
}

void work()
{
	memset(Mark,0,sizeof(bool)*(N+1)); Mark[1] = true;
	Path[1] = 1; AnsCnt = 0; DFs(2);
}

void print()
{
	printf("%d %d\n",C,AnsCnt);
	for (int i=1; i<=AnsCnt; i++)
	{
		for (int j=1; j<N; j++)
			printf("%d ",Ans[i][j]);
		printf("%d\n",Ans[i][N]);
	}
}

int main()
{
	freopen("dislike.in","r",stdin);
	freopen("dislike.out","w",stdout);
	while (true)
	{
		prep();
		work();
		print();
	}
	return 0;
}