#include<iostream>

using namespace std;
void kaeru(char* str,int n,int m);

int main(void){
	char* str;
	int n,m;
	cin >> str;
	cin >> n >> m;
	
	kaeru(str,n,m);
	cout << str << '\n';
	
	return 0;
}
void kaeru(char* str,int n,int m){
	char tmp;
	
	tmp=*(str+n);
	*(str+n)=*(str+m);
	*(str+m)=tmp;
}