import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String[] str = sc.next().split("");
        int from = sc.nextInt();
        int to = sc.nextInt();

        // 入れ替える文字を対比
        String fromStr = str[from];
        String toStr = str[to];

        // 文字入れ替え
        str[from] = toStr;
        str[to] = fromStr;

        String res = String.join("", str);
        System.out.print(res);
    }
}