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- #include <bits/stdc++.h>
- using namespace std;
- long long n,k,c,p,j;
- int main()
- {
- cin>>n;
- p=1;
- while ((1<<(p-1))*((1<<p)-1)<n) p++;
- p--;
- p=(1<<(p-1))*((1<<p)-1);
- k=0;c=0;
- for (j=50;j>=0;j--)
- {
- c=((p>>j)&1);
- if (c==1) k++;
- if(k>=1) cout<<c;
- }
- return 0;
- }
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