#include<iostream>
#include<string>

int main() {
	int b = 0;
	int d = 0;
	char c;
	std::string a;
	std::cin >> a >> b >> d;
	c = a[b];
	a[b] = a[d];
	a[d] = c;
	std:: cout << a;
	return 0;
}