#include<iostream>
#include<string>

using namespace std;

int main(){
	string input;
	int pos_a,pos_b;
	cin >> input >> pos_a >> pos_b;
	for(int i=0;i<input.size();i++){
		if(i==pos_a) cout<<input[pos_b];
		else if(i==pos_b) cout<<input[pos_a];
		else cout<<input[i];
	}
	cout << "\n";
	return 0;
}