#include<stdio.h>
#include<math.h>
int main()
{ char fmt[10]="%0_d ";
long int start,i,end,tot=0;
printf("起始数,终止数=?\n");
scanf("%ld%*c%ld",&start,&end);
if(start>end)i=start,start=end,end=i;
if(end<=0)return 1; /*异常结束*/
fmt[2]='1'+log10(end);
for(i=start;i<=end;i++)
{ printf(fmt,i);
if(++tot%15==0)printf("\n");
}
printf("\n");
return 0;
}