#include <iostream>
#include<string>
#include<cmath>
#include<algorithm>
#include<cctype>
#include<queue>
#include<stack>
#include<stdio.h>
#include<vector>
#include<set>
#include<map>
#include<iomanip>
#define rep(i,n) for(int i=0;i<n;i++)
typedef int long long ll;
using namespace std;
int main(){
    
    string s;
    cin>>s;
    int a,b;
    cin>>a>>b;
    char c;
    c=s[a];
    s[a]=s[b];
    s[b]=c;
    cout<<s<<endl;
    
    
    
    
    
    return 0;
}