#include<bits/stdc++.h>
using namespace std;
int main(){
	int a[15],w,s,n,i;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
	}
	cin>>w;
	cin>>s;
	for(i=n;i>=w;i--){
		a[i]=a[i-1];
	}
	a[w-1]=s;
	for(i=0;i<n+1;i++){
		cout<<a[i];
	}
} 
/**************************************************************
	Problem: 1211
	User: cyp
	Language: C++
	Result: Wrong Answer
****************************************************************/