1047

#include<stdio.h>
#include<math.h>

int main(){
	int m,n,i;
	scanf("%d %d",&m,&n);
	for(i=m;i<=n;i++)
	  printf("%4d %8.4f\n",i,log(i));
	
	
	
	
	
	
	
	return 0;
}