/* package whatever; // don't place package name! */ 
 
import  java.util.* ; 
import  java.lang.* ; 
import  java.io.* ; 
 
/* Name of the class has to be "Main" only if the class is public. */ 
class  Ideone
{ 
	public  static  int  f( int  n) 
    { 
        int  c, i =  0 , a =  1 , b =  1 ; 
        for  ( ;  i <  n; ) 
        { 
            c =  i++  %  2  >  0  ?  a -  b :  a +  b; 
            a =  b; 
            b =  c; 
        } 
        return  b; 
    } 
	{ 
		for  ( int  i =  1 ;  i <  14 ;  i++ ) 
		{ 
			System .
out .
println ( "For n = "  +  i 
+  ", f(n) = "  +  f
( i
) ) ;  		} 
	} 
} 
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		For n = 1, f(n) = 2
For n = 2, f(n) = -1
For n = 3, f(n) = 1
For n = 4, f(n) = -2
For n = 5, f(n) = -1
For n = 6, f(n) = -1
For n = 7, f(n) = -2
For n = 8, f(n) = 1
For n = 9, f(n) = -1
For n = 10, f(n) = 2
For n = 11, f(n) = 1
For n = 12, f(n) = 1
For n = 13, f(n) = 2