#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

int main(){
    string s;
    char t;
    cin >> s;
    int a, b;
    cin >> a >> b;
    t = s[a];
    s[a] = s[b];
    s[b] = t;
    cout << s << endl;

    return 0;
}