#include <cstring>
#include <algorithm>
using namespace std;
int main()
{
    int n;
    cin >> n;
    int ans = 0;
    int t1 = n / 100;
    int t2 = n /10%10;
    int t3 = n % 10;
    if(t3 != 0)
    {
        ans =t3 * 100 + t2 * 10 + t1;
    }
    else 
    {
        ans = t2 * 10 + t1;
    }
    cout << ans <<endl;
    
}

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    int t1=n%10;
    int t2=n/10%10;
    int t3=n/100;
    cout<<t1*100+t2*10+t3;
    return 0;
}

#include<stdio.h>
      int main()
    {
	int n,m;
	scanf("%d",&n);
	if(n>=100&&n<=999){
	
	
	m=n%10;
	switch(m)
	{
	case 0:{
	while(n!=0)
	{
	if(m!=0)printf("%d",m);
	n=n/10;
	m=n%10;}
	}break;
	default:{
	while(n!=0)
	{
	printf("%d",n%10);
	n=n/10;}
	
	}break;
		
    }
    }
	return 0;
    }