#include <bits/stdc++.h>
using namespace std;
int main(){
	int i,x,y,n;
	cin>>n;
	int a[n+1];
	for(i=0;i<n;i++){
		cin>>a[i];	
	}
	cin>>x;
	cin>>y;
	for(i=n-1;i>=x-1;i--){
		a[i+1]=a[i];
	}
	a[x-1]=y;
	for(i=0;i<=n;i++){
		cout<<a[i];
	}
	

}

/**************************************************************
	Problem: 1211
	User: 15159808820
	Language: C++
	Result: Wrong Answer
****************************************************************/