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Cod sursa(job #489928)
#include<iostream.h>
#include<fstream.h>
int x[100],n,m,k;
ifstream fin("permutari.in");
ofstream fout("permutari.out");
int cont(int k){
int i;
for(i=1;i<k;i++)
if(x[i]==x[k])
return 0;
return 1;
}
void tipar(){
for(int i=1;i<=n;i++)
fout<<x[i];
//cout<<x[i]<<' ';
fout<<"\n";
}
int main(){
fin>>n;
k=1;
x[1]=0;
while(k!=0){
if(x[k]<n){
x[k]++;
if(cont(k))
if(k==n)
tipar();
else{
k++;
x[k]=0;
}
}else
k--;
}
fin.close();
fout.close();
return 0;
}