function Main(input) {
    var input = input.split("\n");
    var str = input[0].split("");
    var ans="";
    for(;str.length!=0;){
    	ans+=str.pop();
    }
    console.log(ans);
}
//??°??????????????¢??°??¨(??????)
function ascendingOrder(val1,val2){
    return val1 - val2;
}
//??°??????????????¢??°??¨(??????)
function descendingOrder(val1,val2){
    return val2 - val1;
}
//??°??????
function Int(str){
    return parseInt(str, 10);
}
//????????????
function Str(num){
    return num.toString(10);
}


//???????????°??¨
function debug(){
	var input = document.getElementById("input").value;
	Main(input);
}

//?????????????????\??????????????????
Main(require("fs").readFileSync("/dev/stdin", "utf8"));