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Cod sursa(job #264615)
#include <fstream>
using namespace std;
ifstream f ("date.in");
ofstream g ("date.out");
int n, flag[100], s[100];
void print()
{
int i;
for (i=1; i<=n; ++i)
{
g<<s[i]<<" ";
}
g<<endl;
}
void back(int k)
{
int i;
if (k>n)
{
print();
return;
}
for (i=1; i<=n; ++i)
{
if (flag[i]==0)
{
flag [i]=1;
s[k]=i;
back (k+1);
flag [i]=0;
}
}
}
int main()
{
f>>n;
back(1);
return 0;
}