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Cod sursa(job #825092)
#include<stdio.h>
int n,v[20];
FILE *g=fopen("submultimi.out","w");
void afisare(int k)
{
for(int i=1;i<=k;i++)
fprintf(g,"%d ",v[i]);
fprintf(g,"\n");
}
int verifica(int k)
{
for(int i=1;i<k;i++)
for(int j=i+1;j<=k;j++)
{
if(v[i]==v[j])
return 0;
if(v[j]<v[j-1])
return 0;
}
return 1;
}
void bk(int k)
{
int i;
if(k<=n)
for(i=1;i<=n;i++)
{
v[k]=i;
if(verifica(k)==1)
{
afisare(k);
bk(k+1);
}
}
}
int main()
{
FILE *f=fopen("submultimi.in","r");
fscanf(f,"%d",&n);
bk(1);
return 0;
}