C：MiB到GiB转换;

#include <stdio.h>

int main(){
  int lower, upper, m, g;
  scanf("%d%d",&lower,&upper);

  if(lower<=upper){
    printf("M G n");
    for(m=lower; m<=upper; m++){
    printf("%d %d n",m,g);
    }
  }else
  printf("Error");

  return 0;
}