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  1. #include <cstdio>
  2.  
  3. constexpr int fib(const int n) {
  4.     return n < 2 ? n : fib(n - 2) + fib(n - 1);
  5. }
  6.  
  7. int main(void) {
  8.     printf("%d\n", fib(40));
  9.     return 0;
  10. }
Success #stdin #stdout 0.98s 2884KB
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https://ideone.com/bSZRry
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

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