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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int sumDigits(long long a) {
  5.     if (a == 0) return 0; 
  6.     return (a % 10) + sumDigits(a / 10);
  7. }
  8.  
  9. int main() {
  10.     long long a;
  11.     cin >> a;
  12.     cout << sumDigits(a) << endl;
  13.     return 0;
  14. }
  15.  
Success #stdin #stdout 0s 5320KB
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58
https://ideone.com/Bt5pk2
language:
C++14 (gcc 8.3)
created:
7 hours ago
visibility:
public

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