include [HTML_REMOVED]

using namespace std;
const int N=10;
int n;
int dfs(int m,int nums[],bool use[]){
if(m>n){
for(int i=1;i<=n;i++) cout<[HTML_REMOVED]>n;
int nums[N];
bool use[N]={0};
dfs(1,nums,use);
return 0;
}