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Cod sursa(job #251182)
#include <fstream.h>
ifstream fin("permutari.in");
ofstream fout("permutari.out");
int n,st[30],as,ev;
void init(k){
st[k] = 0;
}
int succ(int k){
if(st[k]<n){st[k]++;return 1;}
return 0;
}
int valid(int k){
for(int i=1;i<k;i++)
if(st[k]==st[i])return 0;
return 1;
}
int sol(int k){
return k==n;
}
void tipar(){
for(int i=1;i<=n;i++)
fout<<st[i]<<" ";
fout<<"\n";
}
void back(int k){
init(k);
while(succ(k))
if(valid(k))
if(sol(k))tipar();
else back(k+1);
}
int main(){
fin>>n;
back(1);
return 0;
}