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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long
  4. ll tcs(ll n)
  5. {
  6.     ll res=0;
  7.     while (n>0)
  8.     {
  9.         res+=n%10;
  10.         n/=10;
  11.  
  12.     }
  13.     return res;
  14. }
  15. int main ()
  16. {
  17.    ios_base::sync_with_stdio(0);
  18. cin.tie(0);
  19.     ll n;
  20.     cin>>n;
  21.     while (gcd(n,tcs(n))==1)
  22.     {
  23.         n++;
  24.  
  25.     }
  26.     cout<<n;
  27. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:21:12: error: use of undeclared identifier 'gcd'
    while (gcd(n,tcs(n))==1)
           ^
1 error generated.
stdout
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Standard output is empty
https://ideone.com/nt0hxq
language:
C++14 (clang 8.0)
created:
77 days ago
visibility:
secret

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