#include <iostream>

int main()
{
    char in[11];
    int i, j;
    
    std::cin >> in;
    std::cin >> i >> j;
    
    char w = in[j];
    in[j] = in[i];
    in[i] = w;
    
    std::cout << in << std::endl;
    
    return 0;
}