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Cod sursa(job #319898)
#include <stdio.h>
#include <stdlib.h>
#define N 1005
char v[N][N];
int n,poz,m,sol[N],solutie,viz[N];
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 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))
{
solutie++;
if (solutie==poz-1)
{
for (int i=1; i<=n; i++)
printf("%d ",sol[i]);
exit(EXIT_SUCCESS);
}
return;
}
for (int i=1; i<=n; i++)
{
if (viz[i])
continue;
if (v[sol[k-1]][i] || v[i][sol[k-1]])
continue;
viz[i]=1;
sol[k]=i;
back(k+1);
viz[i]=0;
}
}
int main()
{
freopen("dusman.in","r",stdin);
freopen("dusman.out","w",stdout);
citire();
back(1);
return 0;
}