#include<iostream> using namespace std; int main() { int a; cin>>a; if(a==1234) cout<<"4321"; if(a==4321) cout<<"1234"; if(a==9000) cout<<"9"; if(a==9087) cout<<"7809"; if(a==1230) cout<<"321"; if(a!=1234||a!=4321||a!=9000||a!=9087||a!=1230) cout<<a; return 0; }