int main(){
	int n;
	scanf("%d", &n);
	if(n<=10)
		printf("%d", n);
	else{
		if(n<=100){
			int a,b,c;
			a = n/10;
			b = n%10;
			c = b*10 + a;
			printf("%d", c);
		}
		else{
			if(n<=1000){
				int d,e,f,g;
				d = n/100;
				e = (n-d*100)/10;
				f = (n-d*100)%10;
				g = f*100+e*10+d;
		   		printf("%d", g);
			}
			else{
				if(n<=10000){
					int h,i,j,k,l;
					h = n/1000;
					i = (n - h*1000)/100;
					j = (n - h*1000 - i*100)/10;
					k = (n - h*1000 - i*100)%10;
					l = k*1000 + j*100 + i*10 +h;
					printf("%d", l);
				}
				else{
					if(n<=100000){
						int m, o,p,q,r,s;
						m = n/10000;
						o = (n-m*10000)/1000;
						p = (n-m*10000-o*1000)/100;
						q = (n-m*10000-o*1000-p*100)/10;
						r = (n-m*10000-o*1000-p*100)%10;
						s = r*10000+q*1000+p*100+o*10+m;
						printf("%d", s);
					}
				}
			}
		}
	}
	return 0;
}