function Main(input) {
  input = input.split("\n").map((line) => line.trim());
  const S = input[0].split("");
  let l = 0;
  for (let i = 0; i < S.length; i++) {
    if (S[i].charCodeAt() < "a".charCodeAt()) break;
    l++;
  }
  const ans = S.slice(0, l).reverse().join("") + S.slice(l).join("");
  console.log(ans);
}

Main(require("fs").readFileSync(0, "utf8"));