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  1. #include <iostream>
  2. #include <cmath>
  3. #include <climits>
  4. #include <numeric>
  5. #include <algorithm>
  6. #include <map>
  7. #include <sstream>
  8. #include <string>
  9. #include <variant>
  10. #include <vector>
  11. #include <iomanip>
  12.  
  13. using namespace std;
  14.  
  15.  
  16. vector<string> split(const string& haystack, const string& needle) {
  17.     vector<string> result;
  18.     size_t start_pos = 0;
  19.     size_t found_pos = haystack.find(needle, start_pos);
  20.     while (found_pos != string::npos) {
  21.         size_t count = found_pos - start_pos;
  22.         string token = haystack.substr(start_pos, count);
  23.         if (!token.empty()) {
  24.             result.push_back(token);
  25.         }
  26.         start_pos = found_pos + needle.length();
  27.         found_pos = haystack.find(needle, start_pos);
  28.     }
  29.     string last_token = haystack.substr(start_pos);
  30.     if (!last_token.empty()) {
  31.         result.push_back(last_token);
  32.     }
  33.     return result;
  34. }
  35.  
  36. int main() {
  37.  
  38.     string s; cin >> s;
  39.     int sum = 0;
  40.     for (int i = 0; i < s.length(); i++) {
  41.         sum = sum + (s[i] - '0');
  42.     }
  43.     int digit_root = -1;
  44.     if (sum % 9 == 0 && sum != 0) {
  45.         digit_root = 9;
  46.     }
  47.     else {
  48.         digit_root = sum%9;
  49.     }
  50.     if (digit_root == 9) {
  51.         cout << "YES";
  52.     }
  53.     else {
  54.         cout << "NO";
  55.     }
  56.     return 0;
  57. }
  58.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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NO
https://ideone.com/m5UxII
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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