#include <stdio.h>
int remain(int i)
{
 int j;
 if(i==10)
  j=1;
 else if(i<10&&i>0)
  j=(2*remain(i+1))+2;
 else if (i<=0)
  j=remain(1);
 else if(i>10)
  j=0;
 return(j);
}
void main()
{
int a,b;
printf("please input the day you want to kown how many peach remained:\n");
scanf("%d",&a);
if(a>10)printf("The peach is eaten out.\n");
else if(a<=0)printf("The peach is not eatean,so have %d peach.\n",remain(1));
else
 {
 for(b=a;b>=1;b--)
 printf("The %d day reamins %d peach.\n",b,remain(b));
 }
}

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