#include<iostream> using namespace std; int main() { int a,b,h,i,j,k,n; cin>>a; n=0; b=a%10; a=a/10; h=b; b=a%10; a=a/10; i=b; b=a%10; a=a/10; j=b; b=a%10; a=a/10; k=b; n=i; i=h; n=j; j=i; n=k; k=h; n=h; h=i; cout<<h<<i<<j<<k; return 0; }