Cod sursa(job #117413)

Utilizator gabitzish1Gabriel Bitis gabitzish1 Data 21 decembrie 2007 13:54:24
Problema Dusman Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.85 kb
#include <stdio.h>
#include <stdlib.h>
int s[1001], n, m, d[1001][4], k, viz[1001];

void citire()
{
	freopen("dusman.in","r",stdin);
	freopen("dusman.out","w",stdout);
	
	int i, x, y;
	scanf("%d %d %d", &n, &k, &m);
	
	for (i = 1; i <= m; i++)
	{
		scanf("%d %d",&x, &y);
		d[x][++d[x][0]] = y;
		d[y][++d[y][0]] = x;
	}
}

void afis()
{
	int i;
	for (i = 1; i <= n; i++) printf("%d ",s[i]);
	printf("\n");
	exit (0);
}


void back(int nivel)
{
	int i, j, ok;
	if (k < 0) return;
	else
	if (nivel > n) {k--; if (!k) afis(); return;}
	
	for (i = 1; i <= n; i++)
	{
		ok = 1;
		for (j=1; j <= 3; j++)
			if (d[i][j] && d[i][j] == s[nivel - 1]) {ok = 0; break;}
		if (!viz[i] && ok)
		{
			viz[i] = 1;
			s[nivel] = i;
			back(nivel+1);
			viz[i] = 0;
		}
	}
}


int main()
{
	citire();
	back(1);
	return 0;
}