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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. long long n, m=5, s=0;
  6. cin >> n;
  7. while(n >= m){
  8.     s = s + (n/m);
  9.     m = m * 5; 
  10. }
  11. cout << s;
  12.  
  13. return 0;
  14. }
Success #stdin #stdout 0s 4308KB
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https://ideone.com/ebZLf8
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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