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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. const int TEN = 10;
  5.  
  6. int main() {
  7.     int n, finalSum = 1;
  8.     cin >> n;
  9.     while (n >= TEN) {  
  10.         finalSum *= n % TEN;
  11.         n /= TEN; 
  12.         if (n == 0 && finalSum >= TEN) {
  13.             n = finalSum;
  14.             finalSum = 1;
  15.         }
  16.     }
  17.     cout << finalSum;
  18.   return 0;
  19. }
Success #stdin #stdout 0.01s 5292KB
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https://ideone.com/PLFhTF
language:
C++14 (gcc 8.3)
created:
35 days ago
visibility:
public

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