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