int main(){
	int n,a,b,c,d,e;
	scanf("%d",&n);
	if(n/10000>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;
		n=a+b*10+c*100+d*1000+e*10000;
		printf("%d",n);
	}
	else{
		if(n/10000==0&&n/1000>0){
			a=n/1000;
			b=(n-a*1000)/100;
			c=(n-a*1000-b*100)/10;
			d=(n-a*1000-b*100-c*10)/1;
			n=a+b*10+c*100+d*1000;
			printf("%d",n);
		}
		else{
			if(n/1000==0&&n/100>0){
				a=n/100;
				b=(n-a*100)/10;
				c=(n-a*100-b*10)/1;
				n=a+b*10+c*100;
				printf("%d",n);
			}
			else{
				if(n/100==0&&n/10>0){
					a=n/10;
					b=(n-a*10)/1;
					n=a+b*10;
					printf("%d",n);
				}
				else
					printf("%d",n);
			}
		}
	}
	return 0;
}
			
		
	
