#include<bits/stdc++.h>

#define INF 1000000007
#define LINF 1000000000000000007

using namespace std;

typedef long long ll;
typedef pair<ll, ll> P;


string s;
int a,b;

int main(){
	cin >> s;
	cin >> a >> b;
	swap(s[a], s[b]);
	cout << s << endl;
	
	return 0;
}