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  1. #include <bits/stdc++.h>
  2. #define ll long long
  3. using namespace std;
  4. int main()
  5. {
  6. ll x ;
  7. cin>>x ;
  8. cout<< x * 2 ;
  9. return 0;
  10. }
Success #stdin #stdout 0s 5316KB
stdin
5
stdout
10