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Dec 19th, 2011
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  1. #include<iostream>
  2. #define LENGTH 46 //46是關鍵,太大會爆掉
  3. // (n*n-m*n-m*m)*(n*n-m*n-m*m)=1 的整數解是費氏數列的連續項
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8. int F[LENGTH] = {1,1};
  9.  
  10. for(int i=2; i<LENGTH; i++)
  11. {
  12. F[i] = F[i-2] + F[i-1];
  13. }
  14.  
  15.  
  16. int input;
  17. while(cin >> input)
  18. {
  19.  
  20. for(int i=LENGTH-1; i>=0; i--)
  21. {
  22. if(F[i]<=input)
  23. {
  24. cout << F[i-1] << ' '<< F[i] << endl;
  25. break;
  26. }
  27. }
  28.  
  29. }
  30.  
  31. }
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