#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,d,s,y;
	scanf("%d",&y);
	a=y%10;
	b=y/10%10;
	c=y/100%10;
	d=y/1000;
	s=a*1000+b*100+c*10+d;
	printf("%d",s);
	
}

/**************************************************************
	Problem: 1029
	User: zhengzihao3
	Language: C
	Result: Compile Error
****************************************************************/