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Cod sursa(job #613922)
#include<stdio.h>
int n, fol[10], sol[10];
void back (int p){
int i;
if(p-1==n){
for(i=1; i<=n; i++)
printf("%d ", sol[i]);
printf("\n");
return ;
}
for(i=1; i<=n; i++)
if(!fol[i]){
fol[i]=1;
sol[p]=i;
back(p+1);
fol[i]=0;
}
}
int main(){
freopen ("permutari.in", "r", stdin);
freopen ("permutari.out", "w", stdout);
scanf("%d ", &n);
back(1);
return 0;
}