Cod sursa(job #316587)

Utilizator cosmin79Carabet Cosmin Andrei cosmin79 Data 20 mai 2009 09:17:47
Problema Dusman Scor 20
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.94 kb
#include <stdio.h>
#include <stdlib.h>
#define N 1005
char v[N][N];
int n,poz,m,sol[N],solutie,stop=1;
void citire()
{
	scanf("%d%d%d",&n,&poz,&m);
	int x,y,i;
	for (i=1; i<=m; i++)
	{
		scanf("%d%d",&x,&y);
		v[x][y]=1;
		v[y][x]=1;
	}
}
int valid(int k)
{
	int i;
	if (v[sol[k-1]][sol[k]] || v[sol[k]][sol[k-1]])
		return 0;
	for (i=1; i<=k-1; i++)
		if (sol[k]==sol[i])
			return 0;
	return 1;
}
int cond(int k)
{
	int i;
	for (i=1; i<=k-1; i++)
		if (v[sol[i]][sol[i-1]])
			return 0;
	return 1;
}
void back(int k)
{
	if (k==n+1 && cond(k) && stop)
	{
		solutie++;
		if (solutie==poz)
		{
			for (int i=1; i<=n; i++)
				printf("%d ",sol[i]);
			stop=0;
			//exit(EXIT_SUCCESS);
		}
		return;
	}
	for (int i=1; i<=n && stop; i++)
	{
		sol[k]=i;
		if (valid(k))
			back(k+1);
	}
}
int main()
{
	freopen("dusman.in","r",stdin);
	freopen("dusman.out","w",stdout);
	citire();
	back(1);
	return 0;
}