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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int f(int n, int c=0) { 
  5.     return n==1 ? c : f(n%2 == 0? n/2 : 3*n+1, c+1); 
  6. }
  7.  
  8. int main(){
  9. 	int n; cin>>n;
  10. 	int h = f(n);
  11. 	cout<< h+1;
  12.  
  13.     return 0;
  14. }
  15.  
  16.  
  17.  
  18.  
  19.  
  20.  
Success #stdin #stdout 0.01s 5280KB
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https://ideone.com/MQxTmU
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
public

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