int main(int argc, char* argv[])
{int k;
int a;
int b;
int c;
int d;
int e;
int x;
scanf("%d",&k);

if (k<10)
{printf ("%d",k);}

if (k>9&&k<100)
{a=k%10;
b=(k-a)/10;
x=(a*10)+b;
printf ("%d",x);}

if (k>99&&k<1000)
{a=k%10;
b=((k%100)-a)/10;
c=(k-a-(b*10))/100;
x=(a*100)+(b*10)+c;
printf ("%d",x);}

if (k>999&&k<10000)
{a=k%10;
b=((k%100)-a)/10;
c=((k%1000)-a-(b*10))/100;
d=(k-a-(b*10)-(c*100))/1000;
x=(a*1000)+(b*100)+(c*10)+d;
printf ("%d",x);}


if (k>9999&&k<100000)
{a=k%10;
b=((k%100)-a)/10;
c=((k%1000)-a-(b*10))/100;
d=((k%10000)-a-(b*10)-(c*100))/1000;
e=(k-a-(b*10)-(c*100)-(d*1000))/10000;
x=(a*10000)+(b*1000)+(c*100)+(d*10)+e;

printf ("%d",x);}
	return 0;
}
		
	