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Cod sursa(job #719703)
#include<fstream>
#include<algorithm>
using namespace std;
ifstream f("permutari.in");
ofstream g("permutari.out");
int i,x,n,j,a[10];
int fact(int n)
{int p=1,i;
for(i=2;i<=n;++i)
p=p*i;
return p;
}
int main()
{f>>n;
for(i=1;i<=n;++i)
a[i]=i,g<<i<<' ';
x=fact(n);
g<<'\n';
for(i=2;i<=x;++i)
{next_permutation(a+1,a+n+1);
for(j=1;j<=n;++j)
g<<a[j]<<' ';
g<<'\n';
}
f.close();
g.close();
return 0;
}