Problem Description:
There are another kind of Fibonacci numbers: F(0) = 7, F(1) = 11, F(n) = F(n-1) + F(n-2) (n>=2).
Input
Input consists of a sequence of lines, each containing an integer n. (n < 1,000,000).
Output
Print the word "yes" if 3 divide evenly into F(n).
Print the word "no" if not.
Sample Input:
0
1
2
3
4
5
Sample Output:
no
no
yes
no
no
no
There are another kind of Fibonacci numbers: F(0) = 7, F(1) = 11, F(n) = F(n-1) + F(n-2) (n>=2).
Input
Input consists of a sequence of lines, each containing an integer n. (n < 1,000,000).
Output
Print the word "yes" if 3 divide evenly into F(n).
Print the word "no" if not.
Sample Input:
0
1
2
3
4
5
Sample Output:
no
no
yes
no
no
no
// i i=0 i=1 i=2 i=3 i=4 i=5 i=6 i=7 i=8 i=9 i=10 1=11
//f(i)%3 1 2 0 2 2 1 0 1 1 2 0 2 (按规律循环出现:2101 1202/ 2101 1202/...... )
// no no yes no no no yes no no no yes
//由上规律可知yes出现位置为2 6 10 14 ......即i%4==2处!!!
#include <iostream>
using namespace std;
int main()
{
int i;
while(cin>>i)
{
if(i%4==2)
cout<<"yes"<<endl;
else
cout<<"no"<<endl;
}
return 0;
}