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Cod sursa(job #660938)
#include<fstream>
using namespace std;
int i,n,sol[10],k,m;
bool b[10];
bool ok1;
ifstream f("permutari.in");
ofstream g("permutari.out");
void back(int r, int m)
{
int i;
if (r-1==m) {
for (i=1;i<=n;i++)
g<<sol[i]<<" ";
g<<"\n";
}
else {
for (i=1;i<=m;i++){
if (b[i]==false){
sol[r]=i;
b[i]=true;
back(r+1,m);
b[i]=false;
}
}
}
}
int main(){
f>>n;
back(1,n);
return 0;
}