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hkshakib

Untitled

Feb 27th, 2020
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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6. string str;
  7. cin >> str;
  8. int len = str.length();
  9. for (int i=0; i<len; i++)
  10. {
  11. if ((len-i) % 3 == 0 && i > 0)
  12. printf(",");
  13. printf("%c",str[i]);
  14. }
  15. printf("\n");
  16. }
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