/* 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
{
{
// your
int f=-1,s=1,n=0;
for(int k=1;k<6;k++){
n=f+s;
f=s;s=n;
}
}
}
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