#include <bits/stdc++.h>
#define rep(i,n) for (int i=0; i<(n); ++i)
using namespace std;
using ll=long long;
int main(){
    string s;
    cin>>s;
    int i,j;
    cin>>i>>j;
    swap(s[i],s[j]);
    cout<<s<<endl;
}