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Cod sursa(job #664442)
#include<cstdio>
using namespace std;
int n,i,sol[20];
bool pus[20];
bool cresc(int k)
{
bool ok;
int i;
ok=true;
for (i=1;i<k;i++)
if (sol[i]>sol[i+1]) ok=false;
return ok;
}
void afis(int k)
{
int i;
for (i=1;i<=k;i++)
printf("%d ",sol[i]);
printf("\n");
}
void back(int k)
{
int i;
for (i=1;i<=n;i++)
{
if (!pus[i]){ sol[k]=i;
pus[i]=true;
if (cresc(k))afis(k);
back(k+1);
pus[i]=false;
sol[k]=0;
}
}
}
int main()
{
freopen("submultimi.in","r",stdin);
freopen("submultimi.out","w",stdout);
scanf("%d",&n);
for (i=1;i<=n;i++)
{
pus[i]=false;
}
back(1);
}