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Cod sursa(job #440664)
#include<stdio.h>
FILE *f=freopen("permutari.in", "r", stdin);
FILE *g=freopen("permutari.out", "w", stdout);
int a[10], n;
bool v[10];
void back(int k);
void afisare();
int main()
{
fscanf(f, "%d", &n);
back(0);
return 0;
}
void back(int k)
{
if(k==n)
afisare();
else
{
for(int i=1; i<=n; i++)
{
if(v[i]==false)
{
a[k]=i;
v[i]=true;
back(k+1);
v[i]=false;
}
}
}
}
void afisare()
{
int i;
for(i=0; i<n; i++)
fprintf(g, "%d ", a[i]);
fprintf(g, "\n");
}