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- #include<bits/stdc++.h>
- using namespace std;
- int main()
- {
- long long int i,j,k,n,ans;
- while(cin>>n && n)
- {
- i=1;
- while(i<=n)
- {
- i*=2;
- }
- i/=2;
- if(i!=n)
- {
- n=n-i;
- n*=2;
- }
- cout<<n<<endl;
- }
- return 0;
- }
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