#include <iostream>
#include <cstdlib>
#include <vector>
#include <algorithm>
int main()
{
    std::string s;
    int a, b;
    std::cin >> s >> a >> b;
    char t = s[a];
    s[a] = s[b];
    s[b] = t;
    std::cout << s << std::endl;
    return 0;
}