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- using namespace std;
- int main()
- {
- int n,k=0,i;
- cin>>n;
- for(i = 0; i < n ; ++i)
- {
- k = k*10 +1;
- k %= n;
- if(k == 0) break;
- }
- if(i != n)
- {
- for(int j = 0 ; j < i+1 ; ++j)
- cout<<1;
- }
- else cout<<"NO";
- cout<<endl;
- return 0;
- }
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