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