#include<iostream> using namespace std; int main(){ int a,b,c,d,e,f; cin>>a; b = a/10000; c = (a-b*10000)/1000; d = (a-b*10000-c*1000)/100; e = (a-b*10000-c*1000-d*100)/10; f = a%10; cout<<f<<e<<d<<c<<b; return 0; }