import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
    String s = sc.next(); //abc
    int n = sc.nextInt(); //0
    int m = sc.nextInt(); //2
    String ans = "";
      for (int i = 0; i < s.length(); i++) {
        if (i == n) {
          ans += s.substring(m, m + 1);
        } else if (i == m) {
          ans += s.substring(n, n + 1);
        } else{
          ans += s.charAt(i);
        }
      }
      System.out.println(ans);
		sc.close();
    }
}