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