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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int main()
  4. {
  5.     ios_base::sync_with_stdio(0);
  6.     cin.tie(0);
  7.     cout.tie(0);
  8.     freopen("digsuper.inp","r",stdin);
  9.     freopen("digsuper.out","w",stdout);
  10.     string n;
  11.     cin >> n;
  12.     long long k;
  13.     cin >> k;
  14.     long long kq=0;
  15.     for(char c: n)
  16.         kq=kq+(c-'0');
  17.     kq=kq*k;
  18.     if(kq%9==0)
  19.     {
  20.         if(kq==0)
  21.             cout << 0;
  22.         else
  23.             cout << 9;
  24.     }
  25.     else
  26.         cout << (kq % 9);
  27.     return 0;
  28.  
  29. }
  30.  
Success #stdin #stdout 0.01s 5276KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/tEsAFI
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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