void main()
{
	int n,a,b,c,d,e,m;
	scanf("%d",&n);
	if(n>10000)
	
	{a=n/10000;
b=(n-a*10000)/1000;
c=(n-a*10000-b*1000)/100;
d=(n-a*10000-b*1000-c*100)/10;
e=n-a*10000-b*1000-c*100-d*10;
m=e*10000+d*1000+c*100+b*10+a;
	}
	else if(n>1000)
		{a=n/1000;
       b=(n-a*1000)/100;
        c=(n-a*1000-b*100)/10;
       d=n-a*1000-b*100-c*10;
       m=d*1000+c*100+b*10+a;}
	else
	{a=n/100;
      b=(n-a*100)/10;
      c=(n-a*100-b*10);

      m=c*100+b*10+a;}
	
	


printf("%d",m);
}