void main()
{
   long	int n,a,b,c,d,e,sum;
	scanf("%ld",&n);
	if (n/10==0) {a=n;printf("%ld",a);}
	else if(n/100==0) {a=n/10;b=n-a*10; sum=b*10+a;printf("%ld",sum);}
	else if(n/1000==0) {a=n/100;b=(n-a*100)/10;c=n-a*100-b*10;sum=100*c+10*b+a;printf("%ld",sum);}
	else if (n/10000==0) {a=n/1000;b=(n-a*1000)/100;c=(n-a*1000-b*100)/10;d=n-a*10000-b*100-c*10;sum=d*1000+c*100+b*10+a;printf("%ld",sum);}
	else if (n/100000==0) {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;sum=e*10000+d*1000+c*100+b*10+a;printf("%ld",sum);}
	
	}
