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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.math.*;
  4.  
  5. class Main
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		long sum = 0;
  10. 		for(long i = 0; ; i++) {
  11. 			long n = fib(i);
  12. 			if(n >= 4000000) {
  13. 				break;
  14. 			}
  15. 			sum += n;
  16. 		}
  17. 		System.out.println("sum : " + sum );
  18. 	}
  19.  
  20. 	private static long fib(long n) {
  21. 		if(n == 0 || n == 1) {
  22. 			return 1;
  23. 		}
  24.  
  25. 		long n0 = 1;
  26. 		long n1 = 1;
  27. 		long curr = n0 + n1;
  28. 		for(long i = 1; i < n; i++) {
  29. 			curr = n0 + n1;
  30. 			n0 = n1;
  31. 			n1 = curr;
  32. 		}
  33.  
  34. 		return curr;
  35. 	}
  36. }
Success #stdin #stdout 0.08s 212416KB
comments (?)
stdin 
Standard input is empty
stdout 
sum : 9227464
https://ideone.com/DJYaj
language:
Java (HotSpot 12)
created:
14 years ago
visibility:
public

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