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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int fib(int n,int f[])
  5. {
  6.     if(f[n]!= -1) return f[n];
  7.     if( n <= 1)// 0,1asle aikne dokbe
  8.     {
  9.         f[n]=n;
  10.         return f[n];
  11.     }
  12.     f[n] = fib(n-1,f)+fib(n-2,f);
  13.     return f[n];
  14. }
  15.  
  16. int main()
  17. {
  18.  
  19.     int n;
  20.     cin >> n;
  21.     int f[n+1];
  22.     memset(f,-1,sizeof(f));
  23.  
  24.     int ans = fib(n,f);
  25.  
  26.     cout << ans << endl;
  27.  
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0s 5328KB
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https://ideone.com/8s7h5r
language:
C++ (gcc 8.3)
created:
6 hours ago
visibility:
public

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