#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    int a[105];
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    int x,y;
    cin>>x>>y;
    x--;
    for(int i=n-1;i>=x;i--){
        a[i+1]=a[i];
    }
    a[x]=y;
    for(int i=0;i<n;i++){
        cout<<a[i];
    }
    return 0;
}
/**************************************************************
	Problem: 1211
	User: luyanchen
	Language: C++
	Result: Wrong Answer
****************************************************************/