import std.stdio;
import std.array;
import std.string;
import std.conv;

void main() {
    string s = chomp(readln());

    string[] input = split(readln());
    int a = to!int(input[0]),
        b = to!int(input[1]);

    foreach (i; 0..s.length) {
        char c = s[i];
        if (i == a) c = s[b];
        else if (i == b) c = s[a];

        write(c);
    }
    writeln();
}